What is the average rate of change for the quadratic function from x=-4 to x=8?

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The value √10 and √15 are plotted on the number line

Eric drove 275 miles in 5 hours. at the same rate how long would it take him to drive 495 miles?

Apyramid fits exactly inside a cube. the cube and the pyramid share the same square base, and they are both exactly the same height. the volume of the cube is 66 cubic inches. what is the volume of the pyramid? explain your answer. answer asap