Algebra Help, Please? :)?

I'll take any help I can get, even if you just know one or two. Please help :) I really appreciate it! 1. For the following system, if you isolated x in the first equation to use the Substitution Method, what expression would you substitute into the second equation? -x + 2y = -6 3x + y = 8 A) -2y + 6 B) 2y - 6 C) 2y + 6 D) -2y - 6 2. Fun Land theme park has a total of 140 males and females who are employed at the park. If the number of males is 20 more than twice the number of females, how many males are employed at the park? A) 40 B) 60 C) 100 D) 110 3. Use the Substitution Method to solve the following system of equations. 2x + y = 3 -3x + 4y = 1 A)(1, 1) B) (-1, -1) C) (1, -1) D) (-1, 1) 4. What is the value of the x variable in the solution to the following system of equations? 7x - 2y = 21 4x + y = 57 A) 21 B) -21 C) 9 D) -9 5. What is the value of the y variable in the solution to the following system of equations? 13x - 6y = 20 7x + 4y = 18 A) 2 B) 1 C)-2 D)-1 6. Auditions for a play in New York were held with 120 men and women trying out for the lead singer position. If twice the number of men less three times the number of women is equal to 20, how many women auditioned? A) 44 B) 40 C) 76 D) 80 7. Solve the following system of equations. 3x - 2y = 6 6x - 4y = 14 A) (0, 0) B) (6, 14) C) Infinitely Many Solutions D) No Solutions 8. Trevor's dad decided to get him a cell phone for his birthday. Cell Plus has a plan that costs $20.00 per month plus an additional $0.06 per minute. Cell Best has a plan that costs $30.00 per month plus an additional $0.05 per minute. How many minutes can Trevor talk and both cell plans cost the same amount? A) 100 B) 1000 C) 500 D) 50 9. There were 150 freshman and sophomores at the high school musical Reese and her friends attended. Freshman tickets were $2.00 each and sophomore tickets were $3.00 each. The receipts for freshman and sophomores tickets totaled $410. How many sophomores bought tickets? A) 40 B) 90 C) 110 D) 120 10. An airplane flew 3 hours with a 40 mph head wind. The return trip with a tail wind of the same speed took 2 hours. Find the speed of the plane in still air. A) 180 mph B) 200 mph C) 220 mph D) 240 mph 11. Two cars leave town going in opposite directions. One car is traveling 60 miles per hour (mph), and the other car is traveling 30 mph. How long will it take before the cars are 360 miles apart? A) 2 hours B) 3 hours C) 4 hours D) 5 hours 12. Your piggy bank has a total of 40 coins in it; some are dimes and some are nickels. If you have a total of $3.25, how many dimes do you have? A) 30 B) 25 C) 20 D) 15 13. Which point lies in the solution set for the following system of inequalities? y > x + 4 y > -2x + 2 A) (-4, 0) B) (-3, 2) C) (2, -1) D) (0, 6) 14. Nick works two jobs to pay for college. He tutors for $15 per hour and also works as a bag boy for $8 per hour. Due to his class and study schedule, Nick is only able to work up to 20 hours per week, but must earn at least $150 per week. If t represents the number of hours Nick tutors and b represents the number of hours he works as a bag boy, which system of inequalities represents this scenario? A) t + b greater than or equal to 20 15t + 8b = 150 B) t + b less than or greater to 20 15t + 8b greater than or equal to 150 C) t + b less than or greater to 20 15t + 8b less than or greater to 150 D) None of the systems shown represent this scenario. 15. Solve the following system of equations. Please show your work to receive full credit. x - y = 16 2x + y = 2 Explain which method you chose to solve the system and why you felt it was the best choice.

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1) 2pts for telling you to suck it up and do your own homework

2) you want us to do your work? good luck in the maths test, or if the teacher tells you to go up to the board to write the answer, or if you get the same questions during class..

3) I would tryy to answer all thee substitution ones, but it's going to be a wee bit too long xD. So for number 3) I'ma isolate the y in the first equation. So it'd by y = -2x +3 . So you got to put that -2x + 3 in the other equation. And since it's a "y=___", you have to put it where it says 4y. That leads to -3x+4(-2x=3)=1. From there, you do distributive property so it's -3x-8x+12=1. Combine like terms, and you get -11x + 12 = 1. Subtract 12 from each side, and then it turns out to be -11x = +-11 . To get just "x" , divide each side by -11. That gives you "x=1" So there, you have half of the answer(: And then to solve for "y", go back to that thing that said "y= -2x+3" You have to put in the value of x, so it becomes -2(1)+3. That doesn't really change anything except for getting rid of the "x", and it becomes -2+3. Do the addition, and you get 1. So your answer is "A" . (: Sorry if you didn't need the work xD. I wasn't sureee so yeah xD I don't think I can show the work for all the other one, so I'll just give you the answer :3 Number 4 is C

4) Learn to do your homework, at least. 1. -x + 2y = -6 -x = -2y -6 x = 2y + 6 2. 140 = (20+2x) + x (suppose x is the no. of males) 140 =20 + 3x 3x = 140 - 20 x=40 3. 2x + y = 3; 2x = 3 - y; x = 3/2-1/2y Substitue the value of x to the 2nd eq'n so, y = 1 Substitute the value of y to the 1st eq'n so, x = 1 (1,1) 4. Try to learn the method in no.3 the value of x is 9. 5. y = 1 6. let x be the no. of men let y be the no. of women 120 = x + y 2x-3y = 20 >>> you get the idea? solve this one on your own 7-15. >>>Practice on system of equetions util you get the whole idea. That's what I do<<<

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