62 + 7h in a algebraic expression

Answer for 10 points show work you guys in advanced < 3

Ebuka's monthly rent is $750. if ebuka pays the rent late, his landlord charges 4% interest per week that the payment is late. write a function that gives the total cost r(t), in dollars, of ebuka's rent if he pays it t weeks late.

I'm marking the brainliest and it's 15 points