Find the slope and the y-intercept of the line y=-2/5x+5

Find the zeros of each function. f(x) = 6x^2 - 7x - 20

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?