PLEASE HELP QUICK
(SAT Prep) Find the value of x in each of the following exercises:

THANKS FOR THE HELP

During a wright loss challenge your friend goes from 125 pounds to 100 pounds.what was the percent weight loss

What is the slope of (0,32) and (100,212)

Alistair has 5 half-pounds chocalate bars. it takes 1 1/2 pounds of chocalate,broken into chunks, to make a batch of cookies. how many batches can alistair mke with chocalate he has on his hand?