Which option is correct and how would one solve for it?

28

Step-by-step explanation:

We need to find the value of

We know that,

Here, n = 3

So,

So,

So, the value of is 28. Hence, the correct option is (d).

step-by-step explanation:

we are given

since, we have to isolate x on anyone side

so, we can move all x terms on one side

subtract both sides by 2x

add both sides by 9

divide both sides by 4

we get