Which is NOT a polynomial?

A. 4/x^4 + 3/x^3 - 2/x^2 - 1

B. x^5 - 5x^4 + 4x^3 - 3x^2

C. 3x^2 + 5x^4 + 2x - 12

D. x^3 - 7x^2 + 9x - 20

Jordan times his run on a treadmill. He records the time to the nearest minute and the distance of his run to the nearest foot. His measurements are shown below.

Ulrich says that the solutions to the quadratic equation 2x2-7x-15=0 are x=-32 and x=5. Which statement correctly describes his solution?

Find the value of 3/4 of 10

What is the unit rate of $420 for 15 tickets!

Ben went to the hardware store by 15 pieces of rope of equal length the total length of the rope was 326.7 meters how long was each rope?

Solve for x: 5x-2x=7x+2x-24

Lydia buys 5 pounds of apples and 3 pounds of bananas for a total of $8.50. Ari buys 3 pounds of apples and 2 pounds of bananas for a total of $5.25. This system pound of apples, and y is the cost per pound of bananas.

What is the value of b if 9 + b = - 8

The drama club is washing cars for a fundraiser if the rate continues how many cars will they wash in 4 hours

Rebecca has five coins worth $.65 in her pocket. Is she only has quarters and nickels how many quarters does she have?