Answer:
Don't stress your self out. Take your time and read over notes, write down things you think are important.
Answer:
C. -3, -2, 2, and 3
Step-by-step explanation:
x⁴ - 13x² + 36 = 0
(x²-4) (x²-9) = (x+2)(x-2)(x+3)(x-3) =0
x = 2 or x = -2 or x = 3 and or x = -3
The function notation f(x)=2x-4 means replace the x on the right-hand side with the value in parentheses on the left.
For example, f(y)=2y-4; f(4)=2(4)-4=4; f(1)=2(1)-4=-2 and so on.
The same principle applies to g(x), for example
g(2)=4(2^2)-3=13,
g(x+1)=4(x+1)^2-3=4(x^2+2x+1)-3=4x^2+8x+4-3=4x^2+8x+1
and so on.
(g of f)(x) is another way to write g(f(x)), therefore
g(f(x))
=g(2x-4) [because f(x)=2x-4
=4(2x-4)^2-3
=4(4x^2-16x+16)-3
=16x^2-64x+64-3
=16x^2-64x+61
Answer:
Fernado saves $90.
Step-by-step explanation:
40% of $150 ( original price ) = $60
$150 - $60 ( original price - discounted price ) = $90 ( savings )
The question asks about the 40% markdown only, so I'd assume you wouldn't reduce it by $25.
But if you did Fernando would save $115 :
40% of $150 ( original price ) = $60
$60 - $25 ( mail-in rebate ) = $35
$150 - $35 ( original price - discounted price ) = $115 ( savings )
