Let f(x) = x2 − 81. Find f−1(x)

D(5, 7). e(4,3), and f(8, 2) form the vertices of a triangle. what is mzdef? oa. 30° ob. 45° oc. 60° od 90°

Adam used 1072.4 gallons of water over the course of 7 days. how much water did adam use, on average, each day?

Including 6% sales tax, an inn charges $135.68 per night. find the inns nightly cost