How do we test a graph to see if it is a function

A piano has 52 white keys. Write and use an equation to find the number of octaves (8 keys) on a piano keyboard.

Shelia rode her bike daily to get ready for a bike race. The following list shows the number of miles she rode each day of the week. 30,27,22,32,35,18,39 how many miles did Shelia average per week?

If f (x) = 2x^2 + 1 and g (x) = x^2 - 7, find (f-g) (x) A. 3x^2 - 6 B. 3x^2 + 8 C. x^2 - 6 D. x^2 + 8

Abigail made a quilt that has an area of 4800 square inches. The length of the quilt is 1 1/3 times the width of the quilt. What are the dimensions of the quilt

What is the answer (2m5n11) 6

If the level of significance of a hypothesis test is raised from. 01 to. 05, the probability of a Type II error a. will not change. b. will increase. c. will also increase from. 01 to. 05. d. will decrease.

A 880-foot tree has grown at a constant rate each year. In the equation below, t is the age of the tree in years. 20t = 880

The last square of the chessboard is square 64. How many pennies are on square 64?

Im going to buy huaraches in womens (7.5) so do i order that size or order an 8?

Ms Cooke bought 9/10 of a cake. She ate 2/5 of her cake. How much cake left.