89. if x, y, and z are numbers such that xy + xz = 100, what is the value of x/5 (3y + 3z) + 10?

a. 60 + 2x

b. 62

c. 70

d. 130

e. 130 + 2x

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