What is the y-intercept of this graph

What is the volume of a rectangular prism if the length is 10.4 mm the width is 5 mm in the height is 8 mm

Ftara spends $219 a month for her car payment and she makes $3,200 a month, what percent of her monthly income is spent on her car payment?

Zach spent 2/3 hour reading on friday a 11/3 hlurs reading on saturday. how much more time did he read on saturday tha on friday