Does anyone mind checking this image out

100

Step-by-step explanation:

100

A "constant rate of change" means "linear," as in y=mx+b where m is a constant slope, because it's changing by the same amount all the time.

Notice after she changes to the compounded amount, there's a curve to the graph.  This is no longer linear, no longer a "constant rate of change."

Does that get you to your answer?

(Remember "for what interval" is asking "for what interval of x-values".)

168

step-by-step explanation:

first off, we know that he drove 3.5 hours at a rate of 48 mph.

knowing that, we want to see how many miles he drove all-together.

in this case, we can just multiply 48 by 3.5.

48 * 3.5 = 168