The graph below shows the distance that Emilio is from his home as a function of time throughout one day. If Emilio begins his day at home, how many hours pass before he is home again?

20

Step-by-step explanation:

I did it in prep works

graph b

step-by-step explanation:

one solution- graph a (clear intercepting point.)

no solution- graph b (they're parallel, there will never be a point of interception.)

infinite solutions- graph c (all points intercept.)

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