Pls help , giving brainliest

Given f(x) = 17-x^2what is the average rate of change in f(x) over the interval [1, 5]?

The number if marbles of different colors stored in a hat is listed below: 4 red marbles 10 green marbles 7 blue marbles. without looking in the hat, dan takes out a marble at random. he replaces the marble and then takes out another marble from the hat. what is the probability that dan takes out a blue marble in both draws?

Three times the sum of a number and seven is negative thirty-six. what is the number?