Let f(x) = -5x + 3 and g(x) =
6x - 2. Find f • g and its domain.
(1 point)
-30x2 + 28x - 6; all real numbers except x
1
3
-15x2-8x-12; all real numbers except x
= =
5
0-30x2 + 28x -6; all
real numbers
-15x2-8x-12; all real numbers
To find f • g, we need to multiply the two functions:
f • g = f(x) * g(x)
f(x) = -5x + 3
g(x) = 6x - 2
f • g = (-5x + 3) * (6x - 2)
= -30x^2 + 10x + 18x - 6
= -30x^2 + 28x - 6
The domain of f • g is all real numbers, because there are no restrictions on the domain of the given functions.