Question

A truck Driver left Cincinnati at 9 AM and drove west at a constant speed. At 10:30 AM, the truck was 75 miles from Cincinnati. Which function show the truck's distance from Cincinnati as a function of minutes, m, driven?

Answer 1

F(x) = (5/6)m

Distance equals rate(r) • time. You're solving for the rate of travel in respect to m minutes. 75 miles were traveled in 90 minutes.

75 = 90r
75/90 = r. This simplifies to 5/6

Create a function for distance where f(x) is defined by the rate 5/6 multiplied my minutes m.