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(HELP ASAP TIMED TEST)

Which of the following functions has the same end behavior as the graph shown below?

A. f(x) = 5x^3 + x^2 - 15
B. f(x) = 3x^4 + 12x^3 + 8x^2 + 60
C. f(x) = -8x^2 + x - 18
D. f(x) = x^2 + 10x + 25

(HELP ASAP TIMED TEST) Which of the following functions has the same end behavior-example-1
User Bbazso
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2 Answers

2 votes

Answer:

I think it's "B. f(x) = 3x^4 + 12x^3 + 8x^2 + 60", if I did it correctly.

User Storm Surge
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4 votes

The function f(x) = 3x^4 + 12x^3 + 8x^2 + 60 has the same end behavior as the graph shown in the image because it is the only function with an even degree greater than 0.

The answer is (B) f(x) = 3x^4 + 12x^3 + 8x^2 + 60.

As x approaches positive or negative infinity, the leading term of a polynomial function dominates its behavior. The leading term is the term with the highest degree. For example, in the function f(x) = 3x^4 + 12x^3 + 8x^2 + 60, the leading term is 3x^4.

The degree of a polynomial function determines its end behavior. For example, a polynomial function with an even degree greater than 0 will approach positive infinity as x approaches positive or negative infinity. A polynomial function with an odd degree greater than 0 will approach positive or negative infinity as x approaches positive infinity, depending on the sign of the leading coefficient.

The graph of the function in the image shows that the function approaches positive infinity as x approaches positive or negative infinity. This means that the function has an even degree greater than 0.

Of the four answer choices, only f(x) = 3x^4 + 12x^3 + 8x^2 + 60 has an even degree greater than 0. Therefore, f(x) = 3x^4 + 12x^3 + 8x^2 + 60 is the only function that has the same end behavior as the graph in the image.

The answer is (B) f(x) = 3x^4 + 12x^3 + 8x^2 + 60.

User Giorgos Ath
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