If 7(3x+9) and 21x + t are equivalent, what is the value of t?

What is 140% of 25? because i need

Which of the following can be used to explain a statement in a geometric proof?

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.