Erik buys carrots and dip for a class snack. the carrots are $3.80, and the dip is$2.60. erik has a coupon for 5% off his groceries. he does not need to pay tax. he gives the cashier $20 how much change does he receive back?

Iwill make brain if you me correctly fill this out needs due today pls and send it back to me (click the link and you will get it)

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.

What is the product? a-3/15a × 5/a-3