Answer: 42
explanation : 90-48=41
4ab^5c (3a^4b^2c^3) = 12a^5b^7c^4...answer B
Answer:
m=3
Step-by-step explanation:
expand and move the terms around
18m+4-1=27+10m
8m=24
m=3
The n-th term is given by

Then we can find the common ratio from the given terms.

The appropriate choice is -1.