Answer:
-infinity, infinity
Step-by-step explanation:
Domain is x, and in a quadratic equation like this one the x axis goes on forever. So the first answer of -infinity, infinity is correct.
(-inf, inf)
Remember, the domain of the function looks at purely the input values (x-axis), not your output values (y-axis).
Keeping this in mind, you can see that the x values stretch from the far left, -inf to the far right +inf.
Remember, as infinities aren't considered actual values, you put them in parentheses. This means your answer is (-inf, inf).
2.6 + 9.2 x 4 would equal, <u><em>39.4</em></u>
f(u +6) = u
Put (u+6) in place of t and simplify:
f(u+6) = (u+6) -6
f(u+6) = u
