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

How to rewrite 16 in exponential notation using 2 as the base

If $1,000 is loaned for 5 months at 6 % annual rate, how much interest is earned?

A square table has a side of 3.35 feet which area of a square table cloth will cover the table

In 2005 there were 14000 students at college A, with a projected enrollment increase of 750 students per year. In the same year there were 35000 students at college B with a projected enrollment decline of 1000 students per year.

Suppose a student usually gets 5.28 hours of sleep. A teacher wants the student to get 8 hours of sleep. What is the percent increase in the number of hours that the student will sleep? Round your answer to the nearest whole percent.

12 quarts - 8 cups = ? cups

A farmer planted corn in a square field. one side of the field measure 32 yards. what is the area of the cornfield? show your work.

Is 2^7 equal to 2 • 7? Explain.

Factor this expression completely and then place the factors in the proper location on the grid. x2 - 9

What are exponential functions