<h3>
Answer: Choice C) x^4 - 2</h3>
Explanation:
If the exponent is negative, then that means we apply the reciprocal. So something like x^(-2) becomes 1/(x^2). A polynomial cannot have a variable in the denominator like this. So we can rule out choices A, B, and D. Choice C is the only thing left. It is a polynomial because the exponent is a positive whole number.
Answer:
<u>Given function:</u>
- p(t) = 2³
a)
<u>Find x when p(t) = 200:</u>
- 2³ = 200
- = 252
- 2t/3 = log 25
- t = 3 log 5
- t = 2.0969 years ≈ 2 years and 1 month
b)
<u>Find p(t) when t = 4:</u>
- p(4) = 2³( ) = 8* = 3713.27 million
100kg Opens 5kg uses 25kg 5.75
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