Which of the following functions best describes this graph? A. y = x2 + x - 12
B. y = x2 + 9x+18
C. y = x2 - 9x+18
D. y = x2 - 5x + 6

When eating out, record the total cost of your meal (before tip) and the tip that you left. determine the percent of the cost of the meal that you left as a tip.

The coverage of a base station of a telecommunication company forms a disk with a radius of (kilometers). let be the distance of a cellphone from a base station. assume that the location of cellphones in use are randomly uniformly distributed within the disk. calculate the mean and variance for the random variable.

How many possible outcomes are there when sharya spins the spinner shown below twice?