Angelo purchased some gifts for his younger brothers and sisters online. He bought a dollhouse for $32.59, 2 board games for $12.95 each and 2 movies for $9.99 each. The web site had a promotional offer of $5 off and no shipping fees for any purchase totaling at least $50. Angelo was charged 7.25% tax on his total purchase. How much did Angelo pay for his online purchase?

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.