Question 1026297
Hi there,
I think there maybe a typo
on your formula.
Think it should read:-
C(x) = 35.50 - 0.07x
After Felipe has used it for
40 minutes:-
C(x) = 35.50 - (0.07 x 40)
C(x) = 35.50 - 2.8
C(x) = $32.7 left.
Hope this helps :-)