Set 7: Quadratic Equations (Intermediate)

Explanation

Answer: A

If a population grows according to $P(t) = 2t^2 + 100t + 500$ , what is the population at $t=10$ ?

1700

✓ Correct

1500

700

2000

Detailed Explanation

Choice A is correct. Choice A is the correct answer. Substitute $t=10$ . 1. $P(10) = 2(10)^2 + 100(10) + 500$ . 2. $P(10) = 2(100) + 1000 + 500$ . 3. $P(10) = 200 + 1000 + 500 = 1700$ . Choice B is incorrect. Choice C is incorrect. Choice D is incorrect.

Key Steps:

•

The correct answer is 1700

Why others are wrong:

B: Choice B is incorrect and may result from a calculation error.

C: Choice C is incorrect and may result from a calculation error.

D: Choice D is incorrect and may result from a calculation error.

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