y = Yolanda's height in inches
y + 7 = Linda's height in inches
2y + (y + 7) = 193

You are a clerk at convenience store. a customer owes 11.69 for a bag of potatoes chips. she gives you a five dollar bill. how much change should the customer receive?

The volume of a sphere is increased by 6%. calculate the corresponding percentage increased in it area.

Carlos spent 1 1/4 hours doing his math homework he spent 1/4 of his time practicing his multiplication facts how many hours to carlos been practicing his multiplication facts