SOLUTION: A car’s speed is 30 miles per hour, and it begins to slow down at a constant rate of 6 miles per hour every 4 seconds. a) Write a linear function that relates the speed of the car

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Question 597401: A car’s speed is 30 miles per hour, and it begins to slow down at a constant rate of 6 miles per hour every 4 seconds.
a) Write a linear function that relates the speed of the car S with the time since it began slowing down t.
b) How fast will the car be going after 10 seconds?

Answer by josmiceli(19441)   (Show Source): You can put this solution on YOUR website!
(a)
mi/hr = mi/sec
mi/sec


mi/sec
--------------------------
(b)
After 10 sec:
mi/sec
mi/sec
mi/sec
( mi/sec )x( sec/hr )
mi/hr
The car will be going about 15 mi/hr

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