Jodi has two bank accounts. Her parents started Account A for her. It currently has $100 in it, and Jodi deposits $20 into it each month Jodi's grandparents started Account B for her. It ccurently has $300 in it and her grandparents deposit $40 into it each month.
Account Ais modeled by the function f(x) = 20x + 100 and Account B is modeled by the function g(x) = 40x + 300 where I represent the number of months from now.
Write a new function ( + 9) () that represents the total amount of money Jodi has in both accounts. Simplify your answer
I

For every corresponding pair of cross sections, the area of the cross section of a sphere with radius r is equal to the area of the cross section of a cylinder with radius and height 2r minus the volume of two cones, each with a radius and height of r. a cross section of the sphere is and a cross section of the cylinder minus the cones, taken parallel to the base of cylinder, is the volume of the cylinder with radius r and height 2r is and the volume of each cone with radius r and height r is 1/3 pie r^3. so the volume of the cylinder minus the two cones is therefore, the volume of the cylinder is 4/3pie r^3 by cavalieri's principle. (fill in options are: r/2- r- 2r- an annulus- a circle -1/3pier^3- 2/3pier^3- 4/3pier^3- 5/3pier^3- 2pier^3- 4pier^3)