(! ) the formula to find a certain number in an arithmetic sequence is an=a1+d(n−1) where an represents the nth term of the sequence, a1 is the first term of the sequence, and d is the common difference. solve for d.

The correct option is A)

Step-by-step explanation:

Consider the provide equation.

We need to solve the equation for d.

Subtract from both sides

Divide both sides by n-1.

Hence, the correct option is A)

351.23

step-by-step explanation:

d. 8

step-by-step explanation:

the given radical expression is:

we can rewrite this as:

we express as square numbers to get;

the exponents will now cancel out to give.

the correct answer is d