Question

The graph below relates the cost ($) of renting a bicycle and the number of hours the bicycle is rented. What is the rate of change?




Group of answer choices

$4/hour

$2/hour

1 hour per $4

2 hours per $8

Answer 1

I can’t see the graph — please upload it or tell me two clear points from it (hours, cost).

How to find the rate: pick two points (h1, c1) and (h2, c2). The rate of change (cost per hour) = (c2 − c1) / (h2 − h1) dollars per hour.

Examples:
- If the graph goes from (0 hr, $0) to (2 hr, $8), rate = (8−0)/(2−0) = $4/hour.
- If it goes from (0 hr, $0) to (1 hr, $2), rate = (2−0)/(1−0) = $2/hour.

Note: “2 hours per $8” equals “1 hour per $4” and is the inverse of dollars per hour, so it’s not the usual rate unit (dollars/hour).