One number is 3 more than another and their sum is 41. Which of the following systems of equations represents the word problem?

Onnie is considering doing some long term investing with money that she inherited. she would like to have $50,000 at the end of 30 years. approximately how much money would lonnie need to put into an account earning 6% interest compounded annually in order to meet her goal?

Find the volume of the solid bounded by the plane z=0 and the paraboloid z=1-x^2 –y^2

The function h (t) = -16t squared + 28t + 500 represents the height of a rock t seconds after it's propelled by a slingshot what does h (3.2) represent?