Austin determined that he has $13.50 in his piggy bank just in quarters and dimes. if q represents the number of quarters he has and d represents the number of dimes, which equation, written in standard form, represents this scenario? q + d = 13.50 0.10q + 0.25d = 13.50 5q + 2d = 270 2q + 5d = 270

David must install fencing around a lot that is shaped like a right angle. the side of lot that runs east-west is 200 ft long. the side of the lot runs north-south is 125 ft long. calculate how many feet of fencing he will need to surround the entire lot.

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

You buy five cds at a sale for $5.95 each. write an expression for the total cost of the cds. then use the distributive property and mental math to evaluate the expression.