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Consider the function f(x) = 4x2 + 5. Find the value of f(x) when x = 2 and select the correct answer below. A. 13 B. 21 C. 69 D. 89
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Consider the function f(x) = 4x2 + 5. Find the value of f(x) when x = 2 and select the correct answer below. A. 13 B. 21 C. 69 D. 89

User Mobile Dan
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2 Answers

4 votes
The answer is B. 21

f(x) = 4(2)^2 + 5
f(x) = 4(4) + 5
f(x) = 16 + 5

f(x) = 21
User Timur Milovanov
by
8.1k points
3 votes
substitute 2 for x


f(2)=4(2)^2+5

f(2)=4(4)+5

f(2)=16+5

f(2)=21

answer is B
User Changwei Yao
by
8.6k points
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