<u>Let's take this problem step-by-step</u>:
<u>The ;unlabeled angle' adjacent to the 'outside angle of measure 78°'</u>
⇒ is on a straight line
⇒ sum of angle measure = 180 degrees

<u>Now we know:</u>
⇒ sum of all angles in a triangle ⇒ 180°
<u>Let's put that in equation form and solve:</u>

<u>Answer: 21°</u>
<u></u>
Hope that helps!
#LearnwithBrainly
The answer is 80 because of 16 times 5 that's how you get your answer
hope this helps :)
The formula is A=p(1 + (r/n))^(nt)
A = 3500(1 + (.08/4))^(4*2)
A = 3500 ( 1.02)^8
A = $ 4100.81