The answer would be 15.
The first equation would be ∠1 = 15°
Then the second equation is ∠2 = (3 * 15 + 30)° which simplifies to 75°
And since complementary angles need to equal 90° to be true we have to add both angles. So, ∠1 (= 15°) + ∠2 (= 75°) = 90°. Now that we know they equal 90°, 15 would be the answer to your problem.
I would say B.
explanation: since the question is referring to asking the question to your audience, you want to make it easier for them to understand. it could be c, but also you’re asking what they might know about your topic, so making a map to illustrate your points so people who don’t understand it, can understand it. if that makes sense?
hope this helped!!
-m :)
The answer is true... think about it, if you can talk through a device, you are still communicating verbally.
