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perixwinkle
Let's find the amount of time in between.
3 hours are in between.
The amount of minutes in 3 hours are 180 minutes.
The car travels 162 miles in 180 minutes.
162 miles:180 minutes
x miles    : 60 minutes
Let's divide 162 by 3
54 miles  : 60 minutes.
It travels an average of 54 miles per hour.

As per linear equation, the average speed of the car is 54 miles/hour.

What is a linear equation?

A linear equation represents an equation that has one or multiple variables with the highest power of the variable is 1.

Given, the distance between point A and point B is 162 miles.

The time taken by the car to reach point B from point A is

[tex]= (10:30) hours - (7:30) hours\\= (3) hours[/tex]

The average speed of the car is

[tex]= \frac{162}{3}[/tex] miles/hour

[tex]= 54[/tex] miles/hour

Learn more about linear equation here: https://brainly.com/question/4043847

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