Question

counting the number of cricket chirps can provide an estimate of the temperature. the formula below gives the temperature in degrees celsius based on the number of cricket chirps (n) in 15 seconds. c = (5n + 40)/9. this formula can be rearranged to solve for the number of chirps as a function of the temperature in degrees celsius. which formula has been rearranged correctly? n = 9/5c - 8 n = 9/5c - 40 n = 9/5(c - 8) n = 9/5(c - 40)

Explanation:

Step1: Start with the original formula

$C=\frac{5n + 40}{9}$

Step2: Multiply both sides by 9

$9C=5n + 40$

Step3: Subtract 40 from both sides

$9C-40 = 5n$

Step4: Divide both sides by 5

$n=\frac{9C-40}{5}=\frac{9}{5}C - 8$

Answer:

$n=\frac{9}{5}C - 8$