Answer correctly for brainliest and also get a ! : ) don't answer if you don't know it !

Sasha drank 8 bottles of water everyday for a week. how many bottles of water did she drink in total?

Iwill give ! if m∠a=59 and m∠3=81°, what is m∠b? m∠b= _[blank]_°

The marked price of an article is 25% above its selling price and the cost price is 30% less than its marked price . find the discount percent and gain percent. only a brainlest can solve it i will mark you brainlest