Which statement is true about the equation 3.5z = 2.25z − 4.25 + 6.25?

it has no solution.
it has one solution.
it has two solutions.
it has infinitely many solutions.

(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 are the solutions of the system? solve by graphing. y = -x^2 -6x - 7 y = 2

Given: ∆mop p∆mop =12+4 3 m∠p = 90°, m∠m = 60° find: mp, mo