Answer:
Rachel has to drive for 5.789 seconds
Step-by-step explanation:
The equation that represents Rachel's remaining distance is:
[tex]D=-38t+220[/tex]
When Rachel completely escaped from the explosion, she has no distance to cover.
Hence D=0.
[tex] - 38t + 220 = 0[/tex]
[tex] - 38t = - 220[/tex]
Divide both sides by -38 to get:
[tex]t = \frac{ - 220}{ - 38} [/tex]
[tex]t = 5.789[/tex]
Rachel will cover 220m in approximately 6 seconds.
The total distance she has to drive is 220m
