Vertices are the essentially the corners of a shape. For example, a circle has zero vertices because there are no corners. A square has four because is has four corners, etc.
Answer:
I = $4,500
Step-by-step explanation:
Simple Interest (I) = PRT / 100
Where:
P= Principal (Amount deposited) = $3000
R= Rate = 7.5%
T= Time = 20 years.
Simple Interest (I) = PRT / 100
I = ($3000 * 7.5 * 20) / 100
I = $450,000 / 100
I = $4,500.
<u>Understanding:</u>
The sum of 3 times a number (i'll define it as x) and 4 means 
is between -8 and 10 which means the value of 3x+4 is less than 10 and greater than -8. With that said, the inequality for that problem would be 
.
<u>Solving the problem:</u>
Now we know that , you can solve the problem by <em>subtracting 4</em> from each side then<em> dividing by 3.</em>
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<u>Final Answer:</u>
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