Answer:
The answer is a(n)=12+(n-1)11; 166 millimeter

<h2><em><u>Hello</u></em><em><u> </u></em><em><u>and</u></em><em><u> </u></em><em><u>sorry</u></em><em><u> </u></em><em><u>but</u></em><em><u> </u></em><em><u>it</u></em><em><u>'</u></em><em><u>s</u></em><em><u> </u></em><em><u>a</u></em><em><u> </u></em><em><u>Gatheted</u></em><em><u> </u></em><em><u>Question</u></em><em><u> </u></em><em><u>Can</u></em><em><u> </u></em><em><u>you</u></em><em><u> </u></em><em><u>fix</u></em><em><u> </u></em><em><u>it</u></em><em><u> </u></em><em><u>Can</u></em><em><u> </u></em><em><u>you</u></em><em><u>?</u></em><em><u> </u></em></h2>
<em><u>Sorry</u></em><em><u> </u></em><em><u>for</u></em><em><u> </u></em><em><u>answering</u></em><em><u> </u></em><em><u>a</u></em><em><u> </u></em><em><u>nonsense</u></em><em><u> </u></em>
<u>#BrainliestBunch</u>
Increased by 15
past score was x
increased by 15 means he raised to 15+x
it was raised to 83%
therefor
x+15=83
first option is right (and first test was 68%)
Answer:
The answer should be 4.12 hours
Step-by-step explanation:
Sorry if I am wrong.