Answer:
f(g(x)) = 9x^2 + 15x - 6
Step-by-step explanation:
We are using function g(x) = 3x - 1 as the input to function f(x) = x^2 + 7x.
Starting with f(x) = x^2 + 7x, substitute g(x) for x on the left side and likewise substitute x^2 + 7x for each x on the right side. We obtain:
f(g(x)) = (3x - 1)^2 + 7(3x - 1).
If we multiply this out, we get:
f(g(x)) = 9x^2 - 6x + 1 + 21x - 7, or
f(g(x)) = 9x^2 + 15x - 6
Well 120 is 1/3 of the square so the 9ft is 2/3 of the square so it is B
To subtract? as minus means subract/take away?
Round all of the numbers to the nearest 10 then solve the problem like normal
1-(-4)^2
1-(-4 times -4)
1-(16)
1-16
-15
