Question

bernards family is leaving for a camping trip tomorrow. gold coast state park, where they will camp, is 220 miles away. bernards parents plan to drive for 3.5 hours in the morning, then stop for lunch. they will complete the trip in the afternoon. they expect their average speed will be 40 miles per hour. which equation can bernard use to predict how many hours, h, they will drive in the afternoon? 3.5(h + 40) = 220 3.5h + 40 = 220 40(h + 3.5) = 220 40h + 3.5 = 220

Explanation:

Step1: Recall the distance - speed - time formula

Distance = Speed×Time.

Step2: Analyze the total - distance situation

The total distance is 220 miles. The speed is 40 miles per hour. The total time of driving is the sum of the morning - driving time (3.5 hours) and the afternoon - driving time $h$. So the total time is $(h + 3.5)$ hours.
Using the formula Distance = Speed×Time, we get $40(h + 3.5)=220$.

Answer:

$40(h + 3.5)=220$