Atruck is rented at $40 per day plus a charge per mile of use. the truck traveled 15 miles in one day, and the total charge was $115. which equation can be used to find the charge x, in dollars, per mile traveled? (1 point) 40x + 15 = 115 40 + 15x = 115 40x + 15x = 115 40 + 15 = 115x

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%