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liberstina [14]
3 years ago
15

If f(x) = x2 + 3x - 4, find f(4).

Mathematics
2 answers:
Nat2105 [25]3 years ago
8 0

Answer:

f(4) = 24

Step-by-step explanation:

Plug in 4 for x in the equation:

f(x) = x² + 3x - 4

f(4) = (4)² + 3(4) - 4

Remember to follow PEMDAS. PEMDAS =

Parenthesis

Exponents (&  Roots)

Multiplication

Division

Addition

Subtraction

and is the order of operation.

First, solve the power:

(4)² = 4 * 4 = 16

Next, multiply 3 with 4:

3 * 4 = 12

Next, combine the terms:

f(4) = 16 + 12 - 4

f(4) = (16 + 12) - 4

f(4) = 28 - 4

f(4) = 24

f(4) = 24 is your answer.

~

garik1379 [7]3 years ago
8 0

Answer:

24

Step-by-step explanation:

Plug x as 4.

(4)² + 3(4) - 4

16 + 12 - 4

= 24

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Answer:

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Step-by-step explanation:

                     ~ Distribute:

               - 11 = 1 / 2 x + -3 / 2

                        ~ Flip the equation:

                  1 / 2 x + -3 / 2 = -11

                          ~ Use transposition method:

                     (take -3 / 2 to the other side)

                       1 / 2 x = -11 - (-3 / 2)

                                  = -19 / 2

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                                    = -19

Hope this helped

Wishing u a gr8 day

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