Earl E. Byrd is selling boxes of cookies for a fundraiser. He gets to keep $5 for every box he sells. A one time fundraising fee of $12 is taken from his earnings. He needs to earn at least $153 to go on the field trip to San Antonio. How many boxes does Earl need to sell to go on the trip?

What is the common difference in the following arithmetic sequence 7,3,-1,-5

The administrator of a large assisted living facility wanted to know the average age of the residents living at the facility. he randomly selected 12 residents and determined their age, listed here: 80, 65, 75, 83, 68, 73, 88, 79, 94, 72, 79, 68 what's the average age of the sample of residents? a. 79 years old b. 68 years old c. 75 years old d. 77 years old

Select the correct answer. what is the exact value of sin (157.5°)? a. 'sqrt(2 - sqrt(2))/2 b. *"-"'sqrt(2 + sqrt(2))/29 c.'sqrt(2 + sqrt(2))/4" d. "-"sqrt(2 + sqrt(2))/4)