What is the common difference in the sequence (-3, 2, 7, 12, ...)

an=a1+d(n−1) a n = a 1 + d ( n - 1 )

Step-by-step explanation:

This is an arithmetic sequence since there is a common difference between each term. In this case, adding −5 to the previous term in the sequence gives the next term. In other words, an=a1+d(n−1) a n = a 1 + d ( n - 1 ) .

(a) the volume of the cone is 20/3 in3

hence, option a is correct.