Which of the following sets of ordered pairs is a function?

A. { (2, 1), (2, 2), (3,4), (5,6) }

B. { (-2,-1), (1, 2), (3, 4), (1,5) }

C. { (1,2), (2, 2), (3, 3), (2,4) }

D. { (1, 1), (2, 1), (3, 2), (4,4) }

99. For an outdoor event, Nathan will wear a raincoat, a hoodie, or a sweater. He will also wear a baseball cap that is black, green, orange, purple, or white. On separate paper, draw a tree diagram that shows all possible combinations.

Solve: z5 + 3 = - 35

Solve this equation for x: x^2+11x+28=0

Train A travels 50 miles/hour. Train A has been traveling for 25 minutes when train B set out in the same direction traveling 60 miles/hour. How long will it take train B to catch

What is the value of 6x2 + 4x+8, when x=7

The radioactive gas radon has a half-life of 3 days. How much of an 80 gram sample will remain after 9 days?

Write the three forms of the distance formula.

Suppose your school cost for this term were $6820 and financial aid covered 75% of that amount. How much did financial aid cover? How much do you still have to pay?

If 675 is 3/4 what is the the other 1/4 and how did you get it?

Aaron's mother purchases a new computer for $1750. If she claims a linear depreciation (loss of value) on the computer at a rate of $250 per year, how long will it take for the value of the computer to be $0?