Which relation is a function?

A. (9,-1), (-1,9), (9,2), (2,-1)

B. (8,-4), (-4,8), (-8,4), (-4,-8)

C. (5,-7), (4,6), (-3,8), (5,8)

D. (2,3), (-2,3), (3,2), (-3,-2)

What is 7^2-13 and the explantion

How many times larger is the radius of a mercury atom, 1.50 x 10-10, than the radius of a hydrogen atom, 2.5 x 10-11?

A town has accumulated 2 inches of snow, and the snow depth is increasing by 6 inches every hour. A nearby town has accumulated 10 inches, and the depth is increasing by 2 inches every hour.

Joan multiplied 9.1 by 10 1. Which statement about the product is true? The product will be greater than 9.1. The product will be equal to 9.1. The product will be less than 9.1.

If measure of angle X = 63, what is measure of angle YZW? A. 63 B. 90 C. 17 D. 27

Is it more efficient to solve - 3x+y=1 for x? why or why notes

How many cups is in 1 liter

Together sarah and max brought in 24 cookies to share with the class. Sarah brought in 7 cookies. Write an equation to find out how many cookies brought in.

Add one set of parentheses to the expression 2x2 + 4 - 5 so that the value of the expression is 75 when x = 6.

Kim took C dollars to the sporting goods store to spend on new cleats. If the cleats cost $42.97, which of the following expressions represents the number of dollars Kim will have after buying the cleats? A. 42.97- B. C + 42.97 C. 42.97 + c D. C-42.