Answer:
2x^2+4x+x-2
Step-by-step explanation:
use FOIL (first, outside, inside, last)
(2x-1)(-x+2)
2x(-x)=-2x^2
2x(2)=4x
-1(-x)=x
-1(2)=-2
2x^2+4x+x-2
The population size after 6 years and after 8 years are 147 and 169 population respectively
<h3>Exponential functions</h3>
The standard exponential function is expressed as y = ab^x
where
a is the base
x is the exponent
Given the function that represents the population size P (t) of the species as shown;

For the population size after 6 years

For the population after 8 years

Hence the population size after 6 years and after 8 years are 147 and 169 population respectively
Learn more on exponential function here: brainly.com/question/2456547
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Answer:
-4x + 12 = 20 is incorrect. she added 12 to 20 instead of subtracting 12 from both sides.
Step-by-step explanation:
It should have been, write problem
-4(x - 3) = 20
Use distributive property.
-4x + 12 = 20
subtract 12 from each side
-4x =8
divide each side by -4
x = -2
0.9 is 0.9278 rounded to the nearest tenth. Hope this helps!
Answer:Wednesday I think
Step-by-step explanation: