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?

Question

Eva Abramson · Accepted Answer

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

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)#

Ethan Adkins · Answer

undefined To find the distance a car travels in 7 hours, substitute 7 for t in the equation d=58t:

d = 58 * 7 = 406 miles.

So, the best estimate of how far a car travels in 7 hours is 406 miles.