While driving past stores, Tatum counted the number of cars in the parking lots. He counted: 19, 9, 1, 15, 19, 3 and 5. What was the median of the number of
cars in the parking lots?
cars
Please help me with my work i’m only in middle school.

Achemist has 200 ml of a 10% sucrose solution. she adds x ml of a 40% sucrose solution. the percent concentration, y, of the final mixture is given by the rational function: the chemist needs the concentration of the final mixture to be 30%. how many milliliters of the 40% solution should she add to the 10% solution to get this concentration?

Terri makes a quilt using three sizes of fabric squares the side lenght of each fabric square is the square root of the area

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%