The answer is 200 points. Because when you add this 200 to her first 200 points, you will get her final points which is 400 points. Hope I was able to help.

8 0

3 years ago

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The change of rate is

irakobra [83]

ROC is often used when speaking about momentum, and it can generally be expressed as a ratio between a change in one variable relative to a corresponding change in another; graphically, the rate of change is represented by the slope of a line. The ROC is often illustrated by the Greek letter delta.

Hope this helps!

5 0

2 years ago

Under her cell phone plan, Lily pays a flat cost of $55.50 per month and $4 per

TEA [102]

Answer:

Equation : y = 4x + 55.50

x = 1.9 gigabytes

Step-by-step explanation:

Given that:

Flat fee per month = $55.50

Cost per gigabyte = $4

Let,

x be the number of gigabytes.

y be the total cost

y = 4x + 55.50

Lily wants to keep her bill $63.10

63.10 = 4x + 55.50

63.10 - 55.50 = 4x

4x = 7.60

Dividing both sides by 4

$\frac{4x}{4} = \frac{7.60}{4}\\x=1.9$

Hence,

Equation : y = 4x + 55.50

x = 1.9 gigabytes

8 0

3 years ago

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