12-09-2022
Mathematics

Answered

A car is driving away om a crosswalk. The formula d = 1² + 3t expresses the car's distance from the crosswalk in feet, d, in terms of the
number of seconds, t, since the car started moving.
a.
Suppose t varies from t = 1 to t = 4.
. i.What is the car's average speed over this interval of time?

b. Suppose t varies from t= 1.6 to t= 2.1.
i.What is the car's average speed over this interval of time?

Answer :

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