Harrison plays a game in which he uses a net to catch balls that are randomly launched from holes in the ground. the height of one ball after t seconds is represented by the function f(t) = –after how many seconds does the ball return to the ground? round to the hundredths place as needed.16t2 + 20t.

Li buys supplies so he can make and sell key chains. he begins to make a profit only after he sells 4 key chains. what point on the graph makes the most sense in this situation?

Witch represents the inverse of the function f(x)=1/4x-12

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.