Rachel is a stunt driver, and she's escaping from a building that is about to explode. D represents Rachel's remaining distance (in meters) after t seconds. D=-38t+220. How long is the distance Rachel has to drive?

she has to drive for 5.789 seconds

Step-by-step explanation:

The equation that represents Rachel's remaining distance is:

D=38+220

When Rachel completely escaped from the explosion, she has no distance to cover.

Hence D=0.

-38+220=0

-38=-220

Divide both sides by -38 to get:

t= -220 over -38

-38t= -220

Rachel will cover 220m in approximately 6 seconds.

The total distance she has to drive is 220m

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step-by-step explanation: