1. Solve 2r - 15 = -9r + 18. a.) r = -0.3

b.)r = -3

c.)r = 0.3

d.)r = 3

D

Step-by-step explanation:

11r = 33

r = 3

b. 153 students do not participate in sports and seventy-five 12th graders were surveyed

m∠5 + m∠3 = m∠1   is true.

m∠5 + m∠6 = 180 is true

m∠2 +m∠3 = m∠6   is true

m∠2 +m∠3 +m∠5 = 180   is true