Simplify ⎷81x^14. assume the variable x represents a positive real number.

The final cost of a sale is determined by multiplying the price on the tag by 75%. which best describes the function that represents the situation?

Evaluate 8j -k+148j−k+14 when j=0.25j=0.25 and k=1k=1.

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.