Bella’s cell phone costs $18 per month plus $0.50 for every minute she uses the phone. Last month her bill was $29.95. How many minutes did she use her phone last month?

The average number of vehicles waiting in line to enter a parking lot can be modeled by the function f left parenthesis x right x squared over 2 left parenthesis 1 minus x right parenthesis endfraction , where x is a number between 0 and 1 known as the traffic intensity. find the rate of change of the number of vehicles waiting with respect to the traffic intensity for the intensities (a) xequals0.3 and (b) xequals0.6.

The base of a triangle exceeds the height by 9 inches. if the area is 180 square inches, find the length of the base and the height of the triangle.

If f(x) and g(x) are inverse functions of each other, which of the following shows the graph of f(g(x)