the amount of money remaining to be paid on a loan, y, is a function of the number of months, x. Suppose that

Question

monthly payments of $225 are to be made on an original loan
amount of $3,000.
Write an expression in terms of x that gives the amount of money remaining to be paid.

$3,000 - $225x

Answer 1

The expression is correct.

The complete mathematical relationship including the function y(x) is:

y(x) = 3000 - 225x

State that the unit of y(x) is in dollars, and x represents the number of monthly payments made.

Note: the above assumes zero interest rate.