1 of 71 of 7 Questions Question What is the domain of the function f(x)=−12x+15?

Answer 1

The domain is the plausible range of x. There is no limit to x, so x = (-∞,∞) or Real numbers. Since the equation is a line, the range is also unlimited. In these questions you look for limits on x: f(x) = lnx , the domain is (0,∞) because only x > 0. The question is confusing because of the first part of it. I just started with the "what"

Answer 2

suppose x=1

f(1) = -12(1) + 5

=> -12 + 15

>= 3,

so {3}