<h3><u>
Answer:</u></h3>
The formula determine the distance from C to D is:

<h3><u>
Step-by-step explanation:</u></h3>
The formula that can be used to determine the distance from point C to point D is:

We know that distance between two points A(a,b) and B(c,d) is equal to the length of the line segment AB and is calculated by the help of the formula:

So, here we have:
(a,b)=(a,b) and (c,d)=(0,b)
The area of the hexagon 24a² -18 is equivalent to 6(4a² -3).
Option A is the correct answer.
<h3>What is a Hexagon ?</h3>
A polygon with 6 sides is called a Hexagon.
The area of a hexagon is equal to area of 6 equilateral triangles.
The area of hexagon is given as
24a² -18
6(4a² -3)
Therefore the area of the hexagon 24a² -18 is equivalent to 6(4a² -3).
Option A is the correct answer.
To know more about Hexagon
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7. the formula for octagon is a=2(1+radical2)s^2
s=4
a=about 77.25
8.
The monthly rate is $45 for this cellphone plan.
Step-by-step explanation:
Given,
Amount charged for cell phone = $60
Amount paid by Regina for 24 month plan = $1140
Number of months = 24
Let,
m be the monthly rate for cellphone plan
Number of months * Monthly rate + cellphone charges = Amount paid

Dividing both sides by 24

The monthly rate is $45 for this cellphone plan.
Keywords: subtraction, division
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