Answer:
Triangle 6: 74
Triangle 7: 29
Triangle 8: 61
Triangle 9: 33
Step-by-step explanation:
Every triangle has a total degree angle of 180 degrees. Add the two sides that are known and subtract the sum from 180 degrees to find out the last angle.
-6 books each month
-24 books
24 divided by 6
4 months
the answer is is D. i.$1,466.92
ii.$5,518.00
iii.$6,621.60
303
Joe will have 90 dollars left