A manager purchased a total of 21 coffee mugs and key chains. Each coffee mug cost $8.50, and each key chain cost $2.75. If the manager spent a total of $132.50, how many coffee mugs did the manager purchase?

One angle of a pair of complement you and God is given what is the measure of the other angle angle one is 67 what is angle to the missing angle

What happens to the probability of committing a type i error if the level of significance is changed from α =.01 to α =.05?

A DVD player that normally cost $160 is on sale for 70% of its normal price. What is the sale price of the DVD player.

What is the vertex of the graph of the function below? y=x^2+8x+12

Write the first five terms of the geometric sequence if the nth term is given by 36 (1/3) ^n-1

How do you divide 156 over 13 using partial quotient?

How do you estimate 538 times 46

Find the median of - 12/4, 18/5, - 25,1/5,10

Simplify sin (-4pi-x)

Hardware Company purchases door hardware sets for $29.86 each. It charges customers $49.99 for the hardware and installation. The labor and other overhead total $11.75 for each set installed. What is the net profit per set?