Which of the following expressions represents a function?

a.{ (1, 2), (4, - 2), (8, 3), (9, - 3) }

b. y2 = 16 - x2

c. 2x2 + y2 = 5

d. x = 7

Kevin bought 4 pizzas to share with friends. If each person has 2/3 of a pizza how many friends can have pizza?

The dimensions of a box are (x + 2), (2x - 1) and (3x + 1). What is the volume of the box? 1) 6x^3+11x^2-3x-2 2) 6x+2 3) 6x^3+11x^2+3x-2 4) 6x^3-2

What is the answer to x - 7 < - 12

Duane and nick are saving their money to build a tree house. Duane a adds $5 to their piggybank every other week. Mick adds $2 every week. So far they have saved $45. How many weeks have they been saving their money?

Suppose 12% of the students chose to study French their freshman year, and that meant that there were 21 such students. How many students chose not to take French their freshman year?

How to multiply 2/3*107,982

What is a standard procedure for dividing by a two-digit divisor? Explain.

How can you tell whether a rational expression is in simplest form? Include an example with your explanation.

Evaluate rs+14s when R=6 S=1/4

Deepak wrote out the steps to his solution of the equation - 3x - 5 + 4x = Deepak's Solution Resulting equations Steps Use the distributive property to simplify. -5+4x - 3x = - 2 Simplify by combining like terms.