D=dollars earned
T=time spent painting the fence.
(1,5) (2,10) (3,15)
D=5T
Answer:
add both for a total of 11
then 6/11 = .54 = 54%
See attached photo……………..
Answer:
He would have to pay $25.75

C is cost, p is pounds
6.75 per pound minus 1.25 with the coupon and you get the cost.