Answer:
Explanation:
Alright, lets get started.
The distance is given as d .
The time is given as h hours.
Given that Morris family is traveling from Providence to Fredricksburg.
And the average speed they have is 45 miles per hour.
The formula for distance is :

Plugging the value of speed as 45 and time as h and distance as d in the formula

hence the expression is d = 45h : Answer
Hope it will help :)