ALGEBRA 2 HELP!

17. Brittany was tracking the increasing temperature in the morning. At 8 a.m., it was 68 degrees Fahrenheit. At 10 a.m., it was 74 degrees Fahrenheit. If Brittany made the function f(x) = 3x + 36, what would the 36 represent? (1 point)

A. The temp. at midnight
B. The rate the temp. was increasing
C. The length of time she recorded for
D. The total change in degrees



11. Given the function f(x) = 5(x+4) − 6, solve for the inverse function when x = 19. (1 point)

A. 1
B. 68
C. 72
D. 84

10. Given the function f(x) =5x-3/4 , which of the below expressions is correct? (1 point)

A. f−1(x) =  3-5x/4
B. f−1(x) =  4x+3/5
C. f−1(x) =  4x-3/5
D. f−1(x) =  -5x-3/4