What is the answer to # 7 and how did you solve it?

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.

Complete the steps to find 4.830 ÷ 5

Why is it so easy to buy on impulse and overspend with a credit card? what could you do to counteract this tendency?