Its 26.315% or rounded to 26.32% commission
Explanation; you take the total of the car, and then divide that by the exact amount Ken earned leaving you with the commission
18,250 ÷ 693.50 = 26.315789474 (normally using only the first two decimals when counting money, rounded to the nearest tenth) leaving you with 26.32
Answer:
16/15
Step-by-step explanation:

The two minus signs cancel, so the result is positive.
The given function is

with
t = time, hours
f = temperature, °C
Because the maximum and minimum values for the Sine function are +1 and -1 respectively,
The maximum value of f = 33 - 20 = 13.
The minimum value of f = -33 - 20 = -53.
The period, T, is given by

Answer:
Maximum: 13°; Minimum: -53°; period: 4 hours