Linda is putting money into a savings account. she starts with $450 in the savings account, and each week she adds $70 .

let s represent the total amount of money in the savings account (in dollars), and let w represent the number of weeks linda has been adding money. write an equation relating s to w . then use this equation to find the total amount of money in the savings account after 19 weeks.

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.