7. a diver is 12 feet above the
surface of the water. he dives
11 feet below the surface. what
is the total distance he dove?
a) draw a picture to represent
the situation, (b) write an
expression, and (c) simplify to
solve.

Aswimming pool had 2.5 million liters of water in it. some water evaporated, and then the pool only had 22 million liters of water in it. what percent of the water evaporated?

2. explain in words how you plot the point (4, −2) in a rectangular coordinate system.

Lizette is training for a marathon. at 7: 00 she left her house and ran until 8: 30, then she walked until 11: 30. she covered a total distance of 18 miles. her running speed was six miles per hour faster than her walking speed. find her running and walking speeds in miles per hour.