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1 year ago

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Which expression is equivalent to -6x + 7.5?

2 answers:

Grace [21]1 year ago

5 0

Answer:

[A] -3(2x-2.5)

Step-by-step explanation:

<em>Given:</em>

<em>Which expression is equivalent to -6x + 7.5?</em>

<em>Solution:
Going through all answer choices:</em>

<em>[A] -3(2x-2.5)</em>

<em>Simplify</em>

<em>-6x + 7.5</em>

<em />

<em>[B] -3(2x + 2.5)</em>

<em>Simplify</em>

<em>-6x - 7.5</em>

<em />

<em>[C] -3(2x-7.5)</em>

<em>Simplify</em>

<em>-6x+22.5</em>

<em />

<em>[D] -3(2x + 7.5)</em>

<em>Simplify</em>

<em>-6x - 22.5</em>

<em />

<em>Hence, the answer is [A] -3(2x-2.5)</em>

<em />

<em />

<u><em>Kavinsky</em></u>

<em />

<em />

Neporo4naja [7]1 year ago

4 0

<h2>Hey there!</h2>

<h3>The expression which is equivalent to - 6x + 7.5 is option (A) - 3(2x - 2.5).</h3>

<h3>☆Explanation:</h3>

- 6x + 7.5

If you we split this equation then we'll get -3(2x-2.5).

Because,

- 3 × 2x gives -6x
(-3) × - 2.5 gives + 7.5

<h2>Hope it helps </h2>

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Answer:

The model for V(t) ,the number of views, t ,months after it's uploaded, best fits the data is $,V(t)=50(6.25)^t$

Step-by-step explanation:

Time (months) Views

0 50

2 313

4 1950

6 12,210

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$(x_1,y_1)=(0,50)\\(x_2,y_2)=(2,313)\\(x_3,y_3)=(4,1950)$

$Slope = \frac{y_2-y_1}{x_2-x_1}$

$Slope = \frac{313-50}{2-0}$

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$Slope = \frac{y_3-y_2}{x_3-x_2}$

$Slope = \frac{1950-313}{4-2}$

Slope =818.5

Since the slope is not same . So, it is not a linear relationship

$\frac{y_2}{y_1}=\frac{313}{50}=6.25\\\frac{y_3}{y_2}=\frac{1950}{313}=6.25$

Since the ratio between the consecutive outputs is same so, it is exponential relationship.

Formula : $y=ab^t$

Where a is the initial value = 50

b = rate of change = 6.25

The model for V(t) ,the number of views, t ,months after it's uploaded, best fits the data

So $,V(t)=50(6.25)^t$

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2 years ago