Sklyer has 15 less than twice as many customers as when she started selling newspapers. she now has 155 customers. how many did she have when she started?

Haruka hiked several kilometers in the morning. she hiked only 66 kilometers in the afternoon, which was 25% less than she had hiked in the morning. how many kilometers did haruka hike in all?

If 7x=9y, y/z = 7/5 , then x/z = (a) 2/7 (b) 7/9 (c) 9/5 (d) 9/7 (e) 5/9

Given the equation negative 4 square root x minus 3 equals 12