Bicycle rental on the seawall at the beach cost a mandatory minimum of $5 for the first hour and then $4 for each additional hour. When three or more bikes are rented together, the owner gives a 20% discount on the additional hours. If Marty and his family rent four bicycles, identify the expression which represents the cost.

A) 12.8x + 20x

B) 12.8x + 20

C) 12.8x + 16x

D) 32.80x

Question

Carleigh Hammond

Mathematics

3 February, 00:24

Bicycle rental on the seawall at the beach cost a mandatory minimum of $5 for the first hour and then $4 for each additional hour. When three or more bikes are rented together, the owner gives a 20% discount on the additional hours. If Marty and his family rent four bicycles, identify the expression which represents the cost.

A) 12.8x + 20x

B) 12.8x + 20

C) 12.8x + 16x

D) 32.80x

+2

Answers (1)

Know the Answer?

Kayden Dyer · Answer 1

Cost = fix cost + hourly cost - discount

Cost = 4 * [5 + 4x - 4x (20/100) ] = 4*[5 + 4x - 0.8x] = 4*[5 + 3.2x] = 20 + 12.8x

Answer: option B) 12.8x + 20