Which one is the correct answer, and why?

D  f(n) = 7n-12

Step-by-step explanation:

The first term is -5

The second term is -5+7  =2

The common difference is 7

an = a1 +d(n-1)    where d is the common difference

     = -5 +7(n-1)

Distribute the 7

    = -5 +7n -7

    7n -12

step-by-step explanation: s

the solution is x=1

step-by-step explanation:

we are given our   equation as

let's assume

left side function is

right side function is

now, we can draw graph

and then we can get intersection point

the intersection point will be solution

so, the solution is

x=1