Let the number of coins added (including the first day and the 6th day) = T (total)
Let the number of days = x
T = 6 + 2n Answer
Now what you want is n = 6
T = 6 + 2*6
T = 18
looks like y = 4 as the isosceles triangle has equal leg sides and this contributes to the double side equivalency to solve
Answer:
− 5 =
9 + 2 = 11
13 = 2 = = 2
13 − 5 = 8
9 = 8
for the 514 hours after 7 p.m. the answer to that is 5 a.m.