Write a real world situation that would representby the system y=3x +20 and y=5x + 10

You have $600,000 saved for retirement. your account earns 5.5% interest. how much, to the nearest dollar, will you be able to pull out each month, if you want to be able to take withdrawals for 20 years?

Which of the following is true for the relation f(x)=2x^2+1

Asphere has a diameter of 10 in. what is the volume of the sphere?