PLEASE ANSWER BOTH 1) A rectangle has a perimeter of 50 centimeters. If the width of the rectangle is 10 centimeters, what is its length?

a 5 centimeters

b 15 centimeters

c 20 centimeters

d 40 centimeters

2) Makela is putting up a fence in her yard to make a dog run. The dog run is 20 feet long and 15 feet wide. How much fencing does she need for the dog run?

a 35 feet

b 55 feet

c 70 feet

d 300 feet

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.