What is the mean of these numbers?4,5,5,2,3,3,2,8

An astronaut drops a rock into a crater on the moon. the distance, d(t), in meters, the rock travels after t seconds can be modeled by the function d(t)0.82. what is the average speed, in meters per second, of the rock between 5 and 10 seconds after it was dropped?

Translate the word phrase into a math expression. 15 fewer than the product of 4 and a number. (pls immediately)

Rewrite the following quadratic functions in intercept or factored form. show your work. f(x) = 3x^2 - 12