The equation 4x2 + 8x + 15 = 0 is being rewritten in vertex form. Fill in the missing step.

Given4x2 + 8x + 15 = 0
Step 14(x2 + 2x ___) + 15 ___ = 0
Step 2✔
Step 34(x + 1)2 + 11 = 0
4(x2 + 2x + 1) + 15 − 4 = 0
4(x2 + 2x + 1) + 15 − 1 = 0
4(x2 + 2x + 2) + 15 − 2 = 0
4(x2 + 2x + 4) + 15 − 4 = 0

3382-299=3383- ? fill in the blank?

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

Use this graph to find the cost of 6 show tickets