Need help ASAP. Thank you.

If eh = hg and hg=16, find the diameter of k

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.

Solve the following pair of equations for x and y: ax/b_ by /a= a +b; ax - by = 2ab