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larisa86 [58]
3 years ago
12

If f(x) = 5x – 2 and g(x) = 2x + 1, find (f+9)(x). A)3x-1 B)7x-1 C)7x-3 D)4x-3

Mathematics
1 answer:
Damm [24]3 years ago
4 0
<h3>Answer:</h3>

B) 7x - 1

<h3>Step-by-step explanation:</h3>

In this question, you're going to solve by adding both f(x) and g(x) together.

You're finding (f+g)(x), meaning that you will be adding both of the equations to get your answer.

What (f+g)(x) looks like:

(5x - 2 + 2x + 1)(x)

What you would do is solve to get your answer. You're going to be combining like-terms and adding.

(5x - 2 + 2x + 1)(x)\\\\\text{Combine the values with x}\\\\7x-2+1\\\\\text{Now you would finish by adding -2 and 1}\\\\7x -1

When you're done solving, you should get 7x - 1

This means that B) 7x - 1 would be the correct answer.

<h3>I hope this helps you out.</h3><h3>Good luck on your academics.</h3><h3>Have a fantastic day!</h3>
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Caitlin has 27 $5 bills and 54 $10 bills.

Step-by-step explanation:

Given,

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Let,

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According to given statement;

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Putting value of y from Eqn 2 in Eqn 1

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Putting x=27 in Eqn 2

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Caitlin has 27 $5 bills and 54 $10 bills.

Keywords: linear equation, substitution method

Learn more about substitution method at:

  • brainly.com/question/10699220
  • brainly.com/question/10703930

#LearnwithBrainly

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