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Contact [7]
3 years ago
7

Using f(x) = 8x + 5 and g(x) = 7x - 2, find:f(g(4))

Mathematics
2 answers:
Vinvika [58]3 years ago
3 0

Answer:

f(g(4)) = 213

General Formulas and Concepts:

<u>Pre-Algebra</u>

Order of Operations: BPEMDAS

  1. Brackets
  2. Parenthesis
  3. Exponents
  4. Multiplication
  5. Division
  6. Addition
  7. Subtraction
  • Left to Right<u> </u>

<u>Algebra I</u>

  • Functions
  • Function Notation
  • Composite Functions

Step-by-step explanation:

<u>Step 1: Define</u>

<em>Identify</em>

f(x) = 8x + 5

g(x) = 7x - 2

<u>Step 2: Find f(g(4))</u>

  1. Substitute in <em>x</em> [Function g(x)]:                                                                         g(4) = 7(4) - 2
  2. Multiply:                                                                                                             g(4) = 28 - 2
  3. Subtract:                                                                                                            g(4) = 26
  4. Substitute in function value [Function f(x)]:                                                      f(g(4)) = 8(26) + 5
  5. Multiply:                                                                                                              f(g(4)) = 208 + 5
  6. Add:                                                                                                                   f(g(4)) = 213
Anon25 [30]3 years ago
3 0

\huge  \qquad \boxed{\underline{\underbrace{\mathcal\color{gold}{Answer}}}}

Here,

f(x) = 8x + 5 and g(x) = 7x - 2,

we have to find the f(g(4))

1st we have to solve the g(x)

  • g(x)=7x-2
  • g(4)=7(4)-2
  • g(4)=28-2
  • g(4)=26

Now substitute the functional value,

  • f(g(x))=8x+5
  • f(g(4))=8(26)+5
  • f(g(4))=208+5
  • f(g(4))=213

.°. The value of f(g(4)) is 213.

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