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elena-14-01-66 [18.8K]
3 years ago
13

Evaluate 3x^2 – 4 when x = 2.

Mathematics
2 answers:
polet [3.4K]3 years ago
7 0

Answer:

C ) 8.

Step-by-step explanation:

Given: 3x^2 – 4 when x = 2.

To find: Evaluate.

Solution: We have given that 3x²– 4

For x =2.

3(2)²– 4.

On solving the power of 2.

3 (4) - 4.

12 - 4 .

On subtracting 4 form 12

8

Therefore, C ) 8.

Mashcka [7]3 years ago
3 0
When x = 2
3x^2 = 3*4 = 12
12-4 = 8
C. is the answer
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A population of 55 foxes in a wildlife preserve doubles in size every 14 years. The function y equals 55 times 2 Superscript x ​
Pavlova-9 [17]
Since <em>x</em> is the number of 14-year periods, the first thing we do is divide 28 years by 14. 28/14=2.  Now we use that in our function, y=55*2^x.

y=55*2^2=55*4=220
There will be 220 foxes after 28 years.
6 0
3 years ago
PLS HELP ME! Write a rule (function) for the data in this table.
yKpoI14uk [10]

Answer:

y = x - 3

<h3>How I know I'm correct:</h3>

if you plug in the numbers from the table, it checks out.

y = x - 3

0 = 3 - 3

0 = 0

y = x - 3

1 = 4 - 3

1 = 1

y = x - 3

2 = 5 - 3

2 = 2

and so on

5 0
4 years ago
What is the value of x.<br> 35<br> 50<br> Not enough info.<br> 95
lawyer [7]

Answer:

50

Step-by-step explanation:

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7 0
2 years ago
Which of the following represents a function? OA X -5-1 9 8 -1 y 1 7 23 17 1 B. y NS x -4 NO 4 C. {(0,1),(3,2), (-8,3), (-7,2),
gregori [183]

Given:

The different relations in the options.

To find:

The relation which represents a function.

Solution:

A relation is called a function if there exist a unique output (y-value) for each input (x-value).

In option A, there exist two outputs y=7 and y=1 for a single input x=-1. So, this is not a function.

In option B, there exist two outputs y=-5 and y=2 for a single input x=-1. So, this is not a function.

In option C, there exist two outputs y=2 and y=4 for a single input x=3. So, this is not a function.

In option D, there exist only one value of y for each x. So, this is a function.

Therefore, the correct option is D.

5 0
3 years ago
When solving the equation 3x = 9, Daniel used a property of algebra and transformed the equation into x=3. Which property did he
muminat

Answer:

B)Division

Step-by-step explanation:

3x=9

divide both side by 3 gives you

x=3

5 0
3 years ago
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