Find a factor in the following expression and simplify it: 6a + 3

How can (square root of 25) ^2 be rewritten?

How many terms does the polynomial x^2 y^2 have

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.