14a. C = 0.09(m - 25) + 50
C = 0.09(80 - 25) + 50
C = 0.09(55) + 50
C = 4.95 + 50
C = 54.95
14b. C = 0.09(m - 25) + 50
85 = 0.09(m - 25) + 50
- 50 - 50
35 = 0.09(m - 25)
0.09 0.09
388⁸/₉ = m - 25
+ 25 + 25
413⁸/₉ = m
14c. The input values that are below 25 does make any sense because it shows that the input values can make the output values decrease itself.