Which of the following numbers is not a prime number?

a. 9

b. 3

c. 7

d. 13

Part of the graph of the function f (x) = (x - 1) (x + 7) is shown below. Which statements about the function are true? Select three options. The vertex of the function is at (-4,-15). The vertex of the function is at (-3,-16).

732 - 25 - 25 11 = - 14

5. Oscar needs to fill a sphere-shaped balloon with helium. If the balloon has a diameter of 8 inches, what is the total amount of helium that the balloon will hold to the nearest tenth? A. 2,143.6 in. 3 B. 714.5 in. C. 268.1 in. 3 D. 150.7 in.

What is 16-2x = 5x + 9

Selecting an Instructor At a convention there are 7 mathematics instructors, 5 computer science instructors, 3 statistics instructors, and 4 science instructors.

Dmitry calculated that he needs 6s^2 square inches of wood for each crate he makes. Simplify the expression when s is replaced by t^4.

A person's temperature is 40° C. What would it be in Kelvin? A. - 313 K B. 313° C C. 313 K D. - 313° C

Nicole bought a piece of property for $12,000. She sold it for $15,000. What is the percent of increase? A. 20% B. 10% C. 15% D. 25%

Ann is 5 feet 3 inches tall. To find the height of a lamppost, she measured her shadow to be 8 feet 9 inches and the lamppost's shadow to be 12 feet. To the nearest inch, what is the height of the lamppost?

Subtract: (3x^2 - 8x + 3) - (-5x^2 + 4x - 5) A. 8x2 - 12x + 8 B. - 2x2 - 4x - 2 C. - 2x2 - 12x + 8 D. 8x2 - 4x - 2