nicole purchased a power boat for $15,000 and was told by the salesman that the yearly average cost to operate the boat was appointmately &900. in what year of the ownership will nicole’s average annual cost of owning the boat be $3900 ?

Mary beth used the mapping rule to find the coordinates of a point that had been rotated 90° counterclockwise around the origin. examine the steps to determine whether she made an error. m (3, –6) is rotated 90° counterclockwise. (x, y) → (–y, x) 1. switch the x- and y-coordinates: (6, –3) 2. multiply the new x-coordinate by –1: (6(–1), –3) 3. simplify: (–6, –3) .

Tim's phone service charges $23.06 plus an additional $0.22 for each text message sent per month. if tim's phone bill was $28.56, which equation could be used to find how many text messages, x, tim sent last month?

What values of x satisfy the inequality x^2-9x< 0? how is your answer shown on the graph?