1 Select the correct answer.
If x is a number that is 7 more than y, how do you express x as a function of y?
O A.
X = fy) = 7 + x
OB. X = f(y) = 7 + y
OC. y = f(x) = 7x
OD. y= f(x) = y - 7
O E. y = f(x) = 7 + y

Marco has $38.43 dollars in his checking account. his checking account is linked to his amazon music account so he can buy music. the songs he purchases cost $1.29. part 1: write an expression to describe the amount of money in his checking account in relationship to the number of songs he purchases. part 2: describe what the variable represents in this situation.

The total cost of anja’s trip to the dentist was $628.35. she paid a flat fee of $89.95 which included the checkup and cleaning and then had 4 cavities filled, each of which cost the same amount. which shows the correct equation and value of x, the cost of each cavity filling?

The function f(x) = 14,600(1.1)* represents the population of a town x years after it was established. what was the original population of the town?