Need help will give brainlest please this practice test makes no sense need explanation

What are the constants in this expression? -10.6+9/10+2/5m-2.4n+3m

Abby is preparing fruit punch for her party. she starts with a bowl filled with liquid that has 1/2 fruit juice and 1/2 sprite, but she decides it's too fruity. so she pours out 1/4 of the liquid, and then fills the bowl up again with sprite. what fraction of the punch is now sprite?

The monetary value earned for selling goods or services to customers is called a.) revenue b.) assets c.) money d.) accounting