Answer:
a. 300 + 24x = y, where x is the number of months, and y is the total balance
b. 396
Step-by-step explanation:
a. The balance of $300 is a constant, so it does not change, this is the first part of our equation. If x is the number of months and we get $24 per month, then we have the second part of our equation. If we say y is the balance, that gives us the last part of the equation, 300 + 24x = y
b. Plug the number 4 in for x (the amount of months), 300 + 24(4) = y, simplify: 300 + 96 = y, simplify: 396 = y