The table below shows the functions to represent the sale f(t), in thousands of four companies in tyears: Company
B
D
Sale
f(t) = 1.05f(t) = 0.75tf(t) = 1.2126ft) = 0.9712
Which of the following companies showed an exponential decay in sale? (1 point)
a
Company A and Company C
Oь
Company B and Company D
Company C and Company D
Oc
Od
Company A and Company B

Step-by-step explanation:

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step-by-step explanation:

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let's call the solutions x₁ = (5 - 2√7)/3 and x₂ = (5 + 2√7)/3

then the equation is (x-x₁)(x-x₂) = 0

if you fill that in you get a lot of numbers which you can recognize as ax²+bx+c=0.

step-by-step explanation:

you can see that a=1 (there is just an x²)

b = (-5 -2√7 + 2√7 - 5)/3 = -10/3

c = -2√7)/3 ) * (-5+2√7)/3) = -1/3

so your answer is 3x^2 – 10x – 1 = 0