Substitute the values of x and y into the expression -3x2 + 2y2 + 5xy - 2y + 5x2 - 3y2. Match that value to one of the numbers.

1. x = 0.5, y = -1
2. x = -1, y = -3 14
3. x = , y = 9.17
4. x = 0, y = 2.5 0.44
5. x = √2, y = √2 -11.25
6. x = 2, y = -1 1.665

Find the pattern and use it to list the nth term in the sequence. 6, 12, 20, 30, 42, 56, the nth term of the sequence is

Express the following as a function of a single angle. cos(60) cos(-20) - sin(60) sin(-20)

The number of chocolate chips in a bag of chocolate chip cookies is approximately normally distributed with a mean of 12611261 chips and a standard deviation of 118118 chips. (a) determine the 2626th percentile for the number of chocolate chips in a bag. (b) determine the number of chocolate chips in a bag that make up the middle 9696% of bags. (c) what is the interquartile range of the number of chocolate chips in a bag of chocolate chip cookies?