There are 172 south american animals in the springdale zoo. that is 45 more than half the number of african animals in the zoo. write an equation you could use to find n, the number of afircan animals in the zoo.

Which of these is and example of a literal equation? a) 6+30=6^2 b)3x-4y c)12=9+3x d)ax-by=k

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%

Last one and the bottom answer choice is y=(x-4)^2+1 you guys!