grocery wants to make two kinds of coffee one sells for $1.45 per pound and the other cells for 2.20 per pound. he wants to makes a total of 21 pounds and sell it for $1.70 per pound. How many pounds of each kind should he use in the new mix?

50 ! pls ! 12.  building codes regulate the steepness of stairs. homes must have steps that are at least 13 inches wide for each 8 inches that they rise.

a. discuss how to find the slope of the stairs.
b. describe how changing the width or height affects the steepness of the stairs.

Place the following steps in order to complete the square and solve the quadratic equation,

Simplify (2^5/3^2)^4 a. 2^20/3^8 b. 2^9/3^8 c. 8^5/12^2 d. 2/3^2