Area of frame=area of total-area of inside ting
area=lenght times width
so
inner one
length is 16-2-2 (both sides) or 12
width or height is 9-2-2=5
so area is 12 times 5=60
outter one
16 by 9
16 times 9=144
so
outer-inner=144-60=84
so 2nd option
F(x)=-3.25x +22.41
f(-4.2)= 3.25(-4.2)+22.41 = 8.76
Answer:
f(x) = (x - 2)²
Step-by-step explanation:
f(x) = x² - 4x + 4 is a perfect trinomial.
You know a trinomial is perfect when double the square root of the first term multiplied by the square root of the last term equals the middle term.
As an equation, a trinomial in the form ax² + bx + c = 0:
2√a√c = b is a perfect trinomial.
Perfect trinomial are factored in this form:
(√a ± √c )(√a ± √c ) = (√a ± √c )²
Whether the sign is + or - depends on if the middle term is positive or negative.
In f(x) = x²-4x+4, the middle term is a negative.
The square root of the first term is 1.
The square root of the second term is 2.
The factored form is (x - 2)²
First, I should point out that g(x) should be written as g(x)=(x+2)/3, otherwise the problem is confusing.
(A) 
(B) Since 
and 
, it holds that
for all x. This means the composed functions are *identical*
