In the given expression ( f(x) = 2x² + 1 ) when when ( x = 3 ), the value of f(x) is 19.
Hence D)19 Is the correct answer.
<h3>What is an Equation?</h3>
An equation is simply a mathematical formula that expresses the equality of two expressions, using the equals sign as a connection between them.
Given that;
f(x) = 2x² + 1, what is (fx) when x = 3
We substitute 3 for x in the equation
f(x) = 2(3)² + 1
f(x) = 2(9) + 1
f(x) = 18 + 1
f(x) = 19
In the given expression ( f(x) = 2x² + 1 ) when when ( x = 3 ), the value of f(x) is 19.
Hence D)19 Is the correct answer.
Learn more about equations here: brainly.com/question/14686792
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<span>(u + 7) + 13 = u + (7 + 13)
The associative property of addition says that you can add numbers regardless of how they're grouped and get the same result. So let's look at the options and see what makes sense.
(u + 7) + 13 = u + (7 + 13)
* This is showing the associative property like the definition states. So this is the correct choice.
21 + 2y = 2y + 21
* This is a demonstration of the commutative property of addition. So it's the wrong choice for this question.
3â‹…(5â‹…x)=(3â‹…5)â‹…x
* This is showing the associative property of multiplication. So it's the wrong choice for this question.
If m + 3 = 18, then 18 = m + 3.
* This is a demonstration of the symmetric property of equality. So for this question, it's the wrong choice.</span>
It’s literally 6, i took a test like this
<span>542.396828571 that is your answer </span>