Relative humidity (%)= actual moisture content x 100 saturation moisture content if the actual moisture content remains constant and the saturation moisture content increases, what happens to the relative humidity?

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  relative humidity decreases

Step-by-step explanation:

When the denominator of a fraction increases as the numerator remains the same, the value of the fraction decreases.

For example,

  1/2 > 1/3

In the relation ...

The value of relative humidity (RH) will decrease when "saturation moisture content" increases.

look at the picture.

y-intercept for the function on a picture is 4 → point (0, 4).

y-intercept for the function

is for x = 0. substitute:

y-intercept is 8 → point (0, 8).

the answer to your question is b.