David paid $2.85 for a snack with quarters and dimes. He used 3 more quarters than dimes. How many quarters and dimes did he use to pay for the snack?

Albert photograph has an area of 80 square inches the length of the photo is 1 1/4 the width which of the following to be the dimensions of the photograph

3. Serena is the manager of the coffee shop. The amount of money she earns is represented by the equation = 21ℎ, where ℎ is the number of hours Serena works, and is the amount of money she earns.

What is a common denominator for 1/3 and 3/4?

The second number is 5 more than the first number squared The sum of the first number squared and the second number is 7 Write a system to represent this relationship, and then solve for the two numbers

To reduce laboratory costs, water samples from four public swimming pools are combined for one test for the presence of bacteria. further testing is done only if the combined sample tests positive. based on past results, there is a 0.

What is c+2d in verbal expression

A used car is priced at $2,695. If you borrow the money for the car, your payments will be $122 a month for 30 months. How much will you save by paying cash?

Of the 1,640 students enrolled at a school, 50% come to school by bus, 35% come by car, and the rest of the students walk to school. How many students walk to school?

The daily supply of oxygen for one person is provided by 625 square feet of lawn. a total of 4375 square feet of lawn would provide the daily supplies of oxygen for how many people?

How to do slope and graph - x+3y=15