Rachel is a stunt driver, and she's escaping from a building that is about to explode! The variable d dd models Rachel's distance from her exit (in meters) t tt seconds after the cameras began recording the stunt. D=38t+220 What is Rachel's speed?

Question

Mathematics

Abigail Henson

22 January, 23:40

Rachel is a stunt driver, and she's escaping from a building that is about to explode! The variable d dd models Rachel's distance from her exit (in meters) t tt seconds after the cameras began recording the stunt. D=38t+220 What is Rachel's speed?

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Answers (1)

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Yandel Osborne · Answer 1

Speed of Rachel is 38m/s.

Step-by-step explanation:

Step 1: Given equation for distance D = 38t + 220 Step 2: Formula for Speed = Distance/Time Step 3: Differentiate the formula for distance with respect to time to find speed

⇒ Speed = d/dt (38t + 220) = 38