The path of a ball kicked from the ground can be modeled by the equation y= -1/3 (x-3)(x-21). Where x and y are measured in feet. The x axis represents the ground. How far does the ball land from where it is kicked?

The ball lands ___ feet from where it is kicked. (Algebra 1)

What is the next step in the given proof? choose the most logical approach. a. statement: m 1 + m 2 + 2(m 3) = 180° reason: angle addition b. statement: m 1 + m 3 = m 2 + m 3 reason: transitive property of equality c. statement: m 1 = m 2 reason: subtraction property of equality d. statement: m 1 + m 2 = m 2 + m 3 reason: substitution property of equality e. statement: 2(m 1) = m 2 + m 3 reason: substitution property of equality