Which table of values could be used to graph g(x), a reflection of f(x) across the x-axis?

Reflecting a function across the x-axis means to change the sign of the function itself: you're mapping

So, if you have a x/y values table, you simply have to change sign to all the values in the y column.

d) 2.3 to 3.5

Step-by-step explanation:

In this problem, we have that:

The mean is 2.9

The standard deviation is 0.6

One standard deviation below the mean

This is the mean subtracted by one standard deviation.

So this is 2.9 - 0.6 = 2.3

One standard deviation above the mean

This is one standard deviation added to the mean.

So this is 2.9 + 0.6 = 3.5

So the correct answer is:

d) 2.3 to 3.5