What is the value of the upper quartile?

A.) 4

B.) –4

C.) 6

D.) 8

Which is f(5) for the function –2x2 + 2x - 3?

Edger needs 6 cookies and 2 brownies for every 4 plates how many cookies and brownies does he need for 10 plates

Given abc find the values of x and y. in your final answer, include all of your calculations.