Prephub

Consider the following problem:

The population of ants in Chloe’s ant farm changes at a rate of $r(t)=-15.8 \cdot 0.9^{t}$ ants per month (where $t$ is time in months). At time $t=0$ , the ant farm’s population is 150 ants. How many ants are in the farm at $t=4$ ?

$150+\int_0^4 r(t) d t$

$\int_0^4 r(t) d t$

$\int_3^4 r(t) d t$

$150+\int_3^4 r(t) d t$

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