Solve this equation -9h -6 +12h + 40=22.

(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

In a class, there are 12 girls. if the ratio of boys to girls is 5: 4 how many boys are there in the class

Aquadratic equation in standard from is written ax^2= bx+c, where a,b and c are real numbers and a is not zero?