Determine if the outside temperature is a function of the time of day or if the time of day is a function of temperature'.

the correct answer is d

hope this

c.

step-by-step explanation:

because first you have to add the 4x, 9x, and the 7x together and you get 20x and then you add the last numbers up and you get 5and then you put the subtraction sign in there and that's how you get the answer.