8 x 5 x 2 = 90
the volume of the book is 90
C because the dot in the middle is filled, aka it’s a equal to answer and the arrow is pointing higher so it’s greater than or equal to. so x is greater than or equal to -3
First find the formula which is A(N)=A+(N-1)D then fill in what you know
N=term your looking for
A=first term
D= common diffrence
Once filled in you will get this 18(18)=18+(18-1)-6
then solve to get 324= -84
Your final answer is that the 18th term is -84
Hope I could help
