Answer:
Step-by-step explanation:
Use the equation
89 < 75 + 0.7*M Subtract 75 from both sides
89 - 75 < 0.7M Combine
14 < 0.7 M Divide both sides by 0.7
14/0.7 < M
20 < M
If M goes over 20 then the flat rate is cheaper.
132 x 14.1% = 18.612
So 18.612 rounded to 18.6
Using complementary angles, <X is equal to <Z, so it's <Z = 35°.
