Heads and Tails, the two championship racing turtles, took off from the starting line at the same time. Heads was moving at 25 feet per minute, while Tails was racing at 20 feet per minute. How long will it take Heads to be 55 feet ahead of Tails?

Which answer is the solution set to the inequality |x|< 9? a. x< -9 or x> 9 b. x> -9 and x< 9 c. x> -9 or x< 9 d. x< 9 and x< 9

What is the 12th term of b(n)=-4-2(n-1)

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%