Entry Level Assessment - Multiple Choice - Page XXXIV: 7

D) After 8 s, Sam reached the mall door.

Work Step by Step

In this function, $y$ represents the distance between Sam and the mall door. Therefore, when $y=0$, there is no distance between Sam and the door. This occurs after 8 seconds. Therefore, the $x$-intercept represents the fact that it took Sam 8 seconds to reach the mall door.

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