Please help this is due TODAY Calculate the unknown variable value .

Do not answer with a one answer, blank or a ridiculous answer please this is serious.

(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

What is the value of x in the equation (2)3) (x+6)= -18 a. -36 b. -33 c. -24 d. -18

Is a triangle with sides of length 6ft, 21 ft, 23 ft. a right triangle?