Lenarr Sanchez made a down payment of $20,000 for the Smart TV costs $90,000. He agreed to pay the remaining balance by paying $8,000 every two months. If the money was
worth 3% compounded every two months, how long did it take him to pay the balance
including the interest? How much was the last payment?

there is no

this is a direct variation proportion. y = kx

y is the total amount due, k is the constant of variation, and x is the number of texts sent.

plug in the 3.20 and the 16 to solve for the "k". this is the constant of proportionality. it is the value that will not change.

3.20 = k(16). solving you get $.20 per text.

the equation would then be y = .20x

54/3 is 18 so 18 is your answer