The series is an arithmetic series with first term -10 and common difference (-2-(-10))=8. The general term a_n can be written as
a_n = -10 + 8(n-1)
or
a_n = -18+8n
The last term corresponds to
110 = -18+8n
128 = 8n
16 = n
So, the summation can be written as
Answer:
1 and 1/4 cups of sugar for 5 batches
Step-by-step explanation:
3/4 cups for 3 batches
1/4 cup for 1 batch
multiply by five
5/4 or 1 and 1/4 cups for 5 batches
First you would have to either make everything pounds or everything grams. If you chance everything into grams it would be about 680, so the 1.5 pound box of raisens would be more.