Kayla tutors for $20 per hour she spends $50 on transportation how much does she earn is she tutors for x hours

the difference between a number and 5 is -2.

step-by-step explanation:

notice that the equation you are given has -2 (negative 2) on the right side, not 2. when you subtract 5 from a number n, you are finding the difference between the number and 5.

the difference between a number and 5 is -2.

yes because there is exactly one y value for every x value

for function there can't be more than one value for every x value