If DE = X - 5, EF = 2x - 9, and DF = 16, find DE.

If f(x)= 3x+6 which of the following is the inverse of f(x)

Cassie is traveling 675 miles today to visit her brother and his family. so far, she has stopped for gas three times. at the first stop, she put in 7.1 gallons of gas and paid $23.79. at her second stop, she put in 5.8 gallons of gas and paid $19.08. and, at the third stop, 6.6 gallons and paid $20.39. at which stop did casey pay the most for gas?

When a rectangle is dilated, how do the perimeter and area of the rectangle change?