A new car costs $23,000. The value decreases by 15%
each year. Write an exponential model to represent the
car's value after t years.

Adecibel is a logarithmic unit that can be used to measure the intensity of a sound. the function y = 10logx gives the intensity of a sound in decibels, where x is the ratio of the intensity of the sound to a reference intensity. the reference intensity is generally set at the threshold of hearing. use the graphing utility to graph the decibel function.a whisper has a sound intensity of 30 decibels. use your graph to you complete the following statement. the sound intensity of a whisper is times the reference intensity.

Askate shop rents roller skates as shown on the table below. which graph and function models this situation?

Which of the following graphs could represent a cubic function?