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Part 1
The snowy tree cricket is sometimes called the temperature cricket because the frequency of its chirps varies based on the temperature. The number of snowy tree cricket chirps per minute is 148 less than 4 times the outside temperature in degrees Fahrenheit. The equation x= 4f - 148 relates the number of chirps per minute x and the outside temperature in degrees Fahrenheit f. How much greater is the temperature in degrees Fahrenheit when the snowy tree cricket chirps 140 times per minute than when it chirps 120 times per​ minute?