Arectangle has an area of 72 in². the length and the width of the rectangle are changed by a scale factor of 3.5. what is the area of the new rectangle?

The sum of two numbers is 86, and their difference is 20. find the two numbers

Graph y ≥ -x^2 - 1. click on the graph until the correct graph appears.

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.