the volume of a sphere is a function of its radius. find the volume of air in a standard volleyball with a diameter of 8.5 inches, given v=4/3πr^3

The data in the table represent the height of an object over time. which model best represents the data? height of an object time (seconds) height (feet) 05 1 50 2 70 3 48 quadratic, because the height of the object increases or decreases with a multiplicative rate of change quadratic, because the height increases and then decreases exponential, because the height of the object increases or decreases with a multiplicative rate of change exponential, because the height increases and then decreases

What percent of the circle below is shaded?

Write the point-slope form of the line passing through (2, -12) and parallel to y=3x.