A group of scientists studied the amount of erosion at a beach. The scientists
determined that the equation y = -0.5x + 26 models the ansount of shoreline, y,
in feet, x decades after 1950. Which statement is true based on the model?
B
c
D
The shoreline is reduced by 0.5 foot every 10 years.
The shoreline is increased by 0.5 foot every 10 years.
The shoreline is reduced by 26 feet every 10 years.
The shoreline is increased by 26 feet every 10 years.

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)