Dave buys a baseball for $15 plus a 6% tax. Mel buys a football for $20 plus a 6% tax. What is the difference in the amount Dave and Mel paid for their purchases, including the tax?

answer: ouch. thats difficult

step-by-step explanation:

y=-2.5x+12.5

step-by-step explanation:

5y=2x+10

y=0.4x+2

slope=-2.5

5=-2.5*3+b

b=12.5

x is the total time in minutes for the free response

you are given number of questions as 15 - m and time per item as 8 minutes

to find x multiply the two givens together:

x = 8 * (15-m) = 8(15-m)