Option D. B
When a point is reflected across the x-axis, (x, y) becomes (-x, y)
Because A (2, 4) and B (-2, 4) are like (x, y) and (-x, y), we know that Option D is the answer.
If the line is directly reflected over the y-axis from point A at (2,3) then answer would be (D) which is point B at (-2,3)
The formula for exponential growth is:
Total = starting value x (1 + rate)^ time
Using the information in the problem the formula would be:
y = 2300(1.093)^t
3.625 seconds, if I did my math correctly.