Answer ! worth 13 points! i need d:

lucy's goal for her cycling class at the gym is to burn 450 calories in one hour. the number of calories (c) she actually burns in one hour varies no more than 45 calories. which inequality below represents this scenario?

a) |c − 450| less than or equal to 45

b) |c + 450| greater than or equal to 45

c) |c − 45| less than or equal to 450

d) |c − 45| greater than or equal to 450

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.