Question

Mandip buys a phone card with a value of $60. For each minute he uses the card, $0.15 is deducted from the balance. If he uses the card for 10 minutes, the balance will be $58.50. Which equation shows the remaining balance, b(t), on the card in dollars as a function of t, the time in minutes the card has been used?

a. b(t) = 0.15t + 60
b. b(t) = 0.15t
c. b(t) = –0.15t + 60
d. b(t) = –0.15t

Answer 1

@Night-Watcher

Answer 2

@AnswerMyQuestions @R-Y-P

Answer 3

hmm

Answer 4

C is the answer because

Answer 5

.15+60=60.15 but -.15 would = 58.50

Answer 6

Hope that helps