Find the volume. need help asap!!

The lines shown below are parallel. if the green line has a slope of -1, what is the slope of the red line?

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

Logan wants to know how many skateboards have defective parts. he inspects 20,000 skateboards and keeps track of the number of defects per board. use his probability distribution table to find the expected value for defects on a skateboard.