Select the correct answer. Write an expression to represent the sum of three times the square of a number and -7.
In your expression, what is the value of the constant?
A. -7
B. 2
C. 3
D. 1

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.