State the range of the following relation and state if it is a function. (3, 2), (4, 1), (4, 5), (5, 1)
a. {3, 4, 5}; yes
b. {1, 2, 5}; yes
c. {3, 4, 5}; no
d. {1, 2, 5}; no

Which basic geometric term has no width, no length, and no thickness? line b. point c. angle d. plane

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%

Complete the solution of the equation. find the value of y when x equals to 6 4x+y=20