The equation C=5h+10 represents the cost, C dollars, to rent a bicycle for h numbers of hours. A) write the equation in function notation

simply

C(h) = 5h + 10

To write the equation in function notation, we can replace the variable "C" with "f(h)" to indicate that we are representing cost as a function of the number of hours.

Thus, the equation C = 5h + 10 can be written in function notation as:

f(h) = 5h + 10

In this notation, "f(h)" represents the cost in dollars as a function of the number of hours, "h".