Alexa can blow 15 balloons in 20 minutes. Sara can blow 18 balloons in 25 minutes, Shirley can blow 16 balloons in 21
minutes and Sam can blow 12 balloons in 23 minutes.

Assuming that all balloons are blown to the same size, who can blow
balloons at the fastest rate?

You will get 25 points an image of a rectangular prism is shown below: part a: a cross section of the prism is cut with a plane parallel to the base. what is the name of the shape created by the cross section? explain your answer. (5 points) part b: if a cross section of the prism is cut perpendicular to the base, what would be the shape of the resulting cross section? explain your answer. (5 points)

The first-serve percentage of a tennis player in a match is normally distributed with a standard deviation of 4.3%. if a sample of 15 random matches of the player is taken, the mean first-serve percentage is found to be 26.4%. what is the margin of error of the sample mean? a. 0.086% b. 0.533% c. 1.11% d. 2.22%

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