Question

The distance d in miles that a car travels in t hours at a rate of 58 miles per hour is given by the equation d=58t. What is the best estimate of how far a car travels in 7 hours?

Answer 1

The car travels `color(blue)406` miles in 7 hours.

Explanation:

We are already given an equation, with `color(blue)d` meaning distance (miles) and `color(red)t` meaning hours (time).

`color(blue)d = 58color(red)t`

Now we can plug in `color(red)7` for `color(red)t` since it is a hour value.

`color(blue)d = 58(color(red)7)`

Now simplify to find the desired distance.

`color(blue)d = color(blue)(406)`