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Anni [7]
3 years ago
5

F (x) = 4x² -4x Find f (-7)

Mathematics
1 answer:
Elan Coil [88]3 years ago
6 0

Answer:

f(-7) = 224

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>Algebra I</u>

  • Function Notation

Step-by-step explanation:

<u>Step 1: Define</u>

f(x) = 4x² - 4x

f(-7) is x = -7

<u>Step 2: Evaluate</u>

  1. Substitute in <em>x</em>:                    f(-7) = 4(-7)² - 4(-7)
  2. Exponents:                          f(-7) = 4(49) - 4(-7)
  3. Multiply:                               f(-7) = 196 + 28
  4. Add:                                     f(-7) = 224
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Answer:

1/5

Step-by-step explanation:

y = 12

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how many 4 characters passwords can be created if using 3 letters and 1 digit and repetition is not allowed?​
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156000

Step-by-step explanation:

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Ethan bought 3 pints of raspberries for $5 per pint and x pints of blueberries for $3 per pint. The average
bagirrra123 [75]

The y-intercept represents the average cost, in dollars per pint, of all the raspberries Ethan bought. Therefore, option B is the correct answer.

Given that, Ethan bought 3 pints of raspberries for $5 per pint and x pints of blueberries for $3 per pint.

The average is (15 + 3x)/(3+x) per pint.

We need to find what quantity will be represented by the y-intercept of the graph.

<h3>How to find the y-intercept of the graph?</h3>

Since the y-intercept always has a corresponding x-value of 0, replace x with 0 in the equation and solve for y. On a graph, the y-intercept can be found by finding the value of y when x=0. This is the point at which the graph crosses through the y-axis.

Now, the graph of y=(15 + 3x)/(3+x)is given below.

To find the x-intercept, substitute in 0 for y and solve for x. To find the y-intercept, substitute in 0 for x and solve for y.

x-intercept(s): (−5,0)

y-intercept(s): (0,5)

So, the y-intercept represents the average cost, in dollars per pint, of all the raspberries Ethan bought.

Therefore, option B is the correct answer.

To learn more about y-intercept visit:

brainly.com/question/14180189.

#SPJ1

7 0
1 year ago
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