-4,-24,-144,-864, I need help

(note i put the graph in so plz )the graph shows the amount of water that remains in a barrel after it begins to leak. the variable x represents the number of days that have passed since the barrel was filled, and y represents the number of gallons of water that remain in the barrel. what is the slope of the line

Find the difference (8ab+a+2) - (3ab+6)

What’s 8y+48 and factor each expression completely