The table below represents a linear function. Identify the rate of change of the function. 3 -17 7 -33 11 49 15 -65.

Which radical expression is a rational number? a. √ 360 b. √ 644 c. √ 225 d. √ 122

Parabolas y=−2x^2 and y=2x^2+k intersect at points a and b that are in the third and the fourth quadrants respectively. find k if length of the segment ab is 5.

Calculate the mean value (expected value) of the following discrete variable x (10 points): x = 0, 1, 2, 3, 4, 5, 6 p(x) = 0.2, 0.2, 0.15, 0.15, 0.15, 0.1, 0.05