A) Expand and simplify.
3(x - 2) - 4(x - 5)
7​

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.

An engineer scale model shows a building that is 3 inches tall. if the scale is 1 inch = 600 feet, how tall is the actual building?

You eat $0.85 for every cup of hot chocolate you sell. how many cups do you need to sell to earn $55.25