Which decimal equals the fraction 3/8?

Simplify. (-2)^-3 a. -8 b. -1/8 c. 1/8 d. 8

What is the best way to answer questions with a x expression in the question. for example 3x + 10x=?

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.