What is the approximate diagonal distance from one corner of a 3 inch by 5 inch index card to the opposite corner

Celeste wants to have her hair cut and permed and also go to lunch. she knows she will need $50. the perm cost twice as much as her haircut and she needs $5 for lunch. how much does the perm cost?

Petes dog weighed 30 pounds it then lost 16% of it's weight how much did pete lose

If the tip varies directly with the number of guest which equation represents between the tip, t, and the number of guest, g?