To find the value of fx 42x 100 when x = 2, we first need to replace x with 2 in the expression.
We have:
fx = 42x * 100
Substituting x = 2:
fx = 42 * 2 * 100
Now we can calculate:
42 * 2 = 84
Next, we multiply 84 by 100:
84 * 100 = 8400
Thus, the value of fx when x = 2 is 8400.