Answer:
A
Step-by-step explanation:
Substitute x = f(x) into g(x), that is
g(f(x))
= g(3x² - 2x - 1)
= (3x² - 2x - 1)² = (3x² - 2x - 1)(3x² - 2x - 1)
Each term in the second factor is multiplied by each term in the first factor, that is
3x²(3x² - 2x - 1) - 2x(3x² - 2x - 1) - 1(3x² - 2x - 1) ← distribute parenthesis
= 9
- 6x³ - 3x² - 6x³ + 4x² + 2x - 3x² + 2x + 1 ← collect like terms
= 9 - 12x³ - 2x² + 4x + 1 → A
Answer:
acute
Step-by-step explanation:
Since all of the angles are less than 90 degrees, the triangle is an acute triangle
Answer:
C: Glenda has been over charged by $3.40 for her purchase
Step-by-step explanation:
There is normally a shape or something to these problems
The vertex of the absolute value function defined by f(x) = Ix - 2I - 7 is (2,-7).
