I put a picture and please solve

12.25 or Approximately 12.3

Step-by-step explanation:

To solve this problem, we first need to solve for x. We are given with 2ˣ=7.

To get x alone, we want to use natural log, or ln.

        [once you find ln of both sides, you bring the x to the front]

                [divide both sides by ln(2)]

We now know that x is approximately 2.81. We can plug that in to find 4ˣ⁻¹.

                    [plug in x]

                [parenthesis]

                       [exponent]

The answer is approximately 12.3. To get a more exact answer, you would plug in into x.

The exact answer would be 12.25. This is close to 12.3 since it is rounded up to one decimal place.