## Calculus: Early Transcendentals 8th Edition

(a) $\int_{0}^{15}f(t) ~dt$ (b) $\int_{30}^{\infty}f(t) ~dt$
(a) We can write an integral for the probability that you drive to school in less than 15 minutes: $\int_{0}^{15}f(t) ~dt$ (b) We can write an integral for the probability that it takes you more than half an hour to get to school: $\int_{30}^{\infty}f(t) ~dt$