Apentix/AP Calculus AB/Unit 8: Applications of Integration/Question

AP Calculus ABeasymcq1 pt

People enter a stadium at a rate of $r(t)=60+10t$ people per hour. How many people enter the stadium during the first 4 hours?

A.

400

B.

240

C.

80

D.

320

Explanation

Core Concept

The number is $\int_0^4(60+10t)\,dt=[60t+5t^2]_0^4=240+80=320$ .

Correct Answer

D $320$

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