Question

Write a function rule that gives the total cost c(p) of p pounds of sugar if each pound costs $.59

Answer 1

c(p) = .59p

Answer 2

C(p) has unit $/lbs, p=lbs
Say I buy 1 lb then I will have to pay 0.59 (p=1)
If I buy 2 lbs then I will have to pay 0.59(2) (p=2)
If I buy 3 lbs then I will have to pay 0.59(3) (p=3)
and if you continue in this manner you notice (or may have already noticed) that
C(p)=0.59(how many pounds we purchase)=0.59p