Every formula related to trigonometry Please help
I’m taking online classes and I don’t understand anything from my opt. math teacher
I’m a 8th grader
Please help this poor soul...

Carrie started with 12 ounces of water when she begin to walk. when she was finish walking she had 2 1/4 ounces of water left. how much did she drank

How to solve a simultaneous equation involved with fractions?

You’re ordering more thread for blue jeans co. you usually purchase from ted’s threads, which sells 12 thread spools for $27. you recently received a notice from wade's wares that says you can buy thread from them for $2.30 each for the first 2 dozen and $2 a spool thereafter. you need to order 5 dozen spools. what percentage can you save by going with wade’s wares?