You deposit $400 in an account. The account earns $18 simple interest in 9 months. What is the annual interest rate?

David must install fencing around a lot that is shaped like a right angle.the side of lot that runs east-west is 200 ft long.the side of the lot runs north-south is 125 ft long.calculate how many feet of fencing he will need to surround the entire lot.

Find dy/dx using implicit differentiation ln(20+e^xy)=y

What value of x is in the solution set of 4x – 12 s 16 + 8x?