Answer:
a. 30
Step-by-step explanation:
(f.f) = f(f(x))
Given: f(x) = x^2 -x
Now replace x = x^2 -x in f(x), we get
(f.f) = f((x^2 - x)^2 - (x^2 - x))
= (x^2 - x) (x^2 - x) -x^2 + x
= x^4 -x^3 - x^3 + x^2 - x^2 + x
= x^4 -2x^3 + x
Now plug in x = 3
f.f(3) = 3^4 -2(3)^3 + (3)
= 81 - 2*27 + 3
= 81 -54 + 3
f.f(3) = 84 -54
(f.f)(3) = 30
Thank you.
Answer:
Perimeter of his fence = 120 m
Step-by-step explanation:
Given:
Area of square land = 3,600 m²
Find:
Perimeter of his fence
Computation:
Area of square land = 3,600 m²
4a² = 3,600 m²
a² = 900 m²
a = 30 m
Perimeter of his fence = 4a
Perimeter of his fence = 4 x 30
Perimeter of his fence = 120 m
The right answer for the question that is being asked and shown above is that: "A: Sale of 10% off and a successive discount of 10% off." The <span>store that would let you pay the least amount for an item that is priced $360 is the Store A.</span>
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