Find the exact length of the third side .

F(n + 1) = f(n) – 8. if f(1) = 100, what is f(6)?

Tim's phone service charges $26.39 plus an additional $0.21 for each text message sent per month. if tim's phone bill was $31.64, which equation could be used to find how many text messages, x, tim sent last month?

Can somebody 1. what is the formula for finding the vertical distance between two points on a coordinate plane?