False, because it would no longer be 18 alone because of the disturbutive property.
<span><u><em>The correct answers are: </em></u>
1) C
2) A
3) D
<u><em>Explanation</em></u><span><u><em>: </em></u>
1) <u>Voluntary deductions</u> are amounts that you elect to come out of your paycheck every pay period. Federal tax is not voluntary; neither is state tax, nor Social Security. The only voluntary deduction in this list is health insurance. You are not obligated to pay for your health insurance by automatically withholding it from your check.
2) <u>FICA</u> is the tax that goes towards Social Security and Medicare. It is involuntary, and it is deducted as a percentage of your gross (pre-withholding) pay.
3) <u>A fixed expense</u> would be one that is the same from month to month. The only one of these expenses that would be the same amount monthly is a mortgage.</span></span>
Proof with explanation:
We know that the sum of first 'n' terms of a Geometric progression is given by

where
a = first term of G.P
r is the common ratio
'n' is the number of terms
Thus the sum of 'n' terms is

Now the sum of first '2n' terms is

Now the sum of terms from
to
term is 
Thus the ratio becomes

Answer:
Agree
Step-by-step explanation:
Answer: B)12
Step-by-step explanation:
cross multiply and divide