How do you do solving for unknown variables

Kelly has a muffin recipe that calls for 1 and 1/2 cups of sugar. She wants to use

What is the answer to 739 times 92

Sixty eight is one fourth of what number

The graph shows the volume (y) of a cup of water (in ml). The cup has a small leak and the volume of water is decreasing at a constant rate each second (x). The situation can be expressed as a linear equation.

8 5/9 + 3 5/9 + 6 4/9

Contestants dance and I dance-athon rest for the same amount of time every hour a couple rests for 25 minutes in five hours how long did the rest in 8 hours?

If AD=6x+10 and CD=2x+12, find the length of AC

Determine which rational humber is greater by rewriting each pair of fractions using their LCD. 2/15, 4/25 2/5, 4/11

Jesus purchased cookies for a party. He bought 11 cookies for $.51 each and 12 cookies for $.62. How much money did he spend on cookies?

Fir a walk-a-thon a sponsor to give a flat tree of 5$ plus 2$ for every mile m you walk