9514 1404 393
Answer:
b = -5
c = -2
Explanation:
The explicit form of a sequence with common ratio r and first term a1 is ...
an = a1(r^(n-1))
Matching the forms, we see that ...
b is the first term of the sequence: -5.
c is the common ratio: 10/-5 = -2.
In summary, ...
b = -5, c = -2