8y9 z4 + 40y5 z4 - 8y4 z4

Tim is 5 years older than JoAnne. Six years from now the sum of their ages will be 79. How old are they now?

An empty swimming pool can be filled to capacity through an inlet pipe in 3 hours, and it can be completely drained by a drainpipe in 6 hours.

Mr. Seidel filled up his 14 gallon gas tank for 29.26. What was the price per gallon?

What do you divide your area by to calculate a quarter of it

Nola hiked down a trail at a steady rate for 10 minutes. Her change in elevation was - 200 feet. Then she continued to hike down another 20 minutes at a different rate. Her change in elevation for this part of the hike was - 300 feet.

1. In a certain county, the number of Charter Schools is eleven less than twice the number of Alternative Schools. There are 35 Charter Schools in the county.

Which is greater - 31 3/7 or 31.1

40 girls and boys have planned for unnaual function: They are in a ratio of 2 girls to 6 boys. How many boys are there?

Solve the system of equationsy=6x^2-5x+1, y=-2x+4

The relationships between the price and the number of a program sold is linear