The first one. It is called an exponential decay curve.
Yes it's
30000+8000+900+50+6
So when you change the mixed numbers into improper fractions, they become 85/4 and 74/4. Your new problem is 85/4-74/4. Basically 85-74. That equals 9. So the improper fraction answer is 9/4. We now make that back into a mixed number, creating 2 1/4, or A.
The number used for the interest rate will be 6.17% in decimal form: 0.0617.
8x+12y=120
8 packs -> x value
12 packs -> y value
-------------------------------
total amt. of beverages is 120