3 + 4x - 2x, when x = 0.5
2 answers:
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Lets just use 
for an example. If the number is increased by 60% and the denominator is decreased by 20% we get the new fraction being: 
. Since then new one is equal to 1, and the original is equal to 
, we see that this manipulation of the fraction causes an increase of 100%.
Answer:
<em>The total price of the CD is $14.18</em>
Step-by-step explanation:
<u>Percentages </u>
We can compute additive or subtractive percentages by using these formulas. If we have a number X and want to increase it by Y%, then the increase is xY/100. Thus the new value for the number is x+xY/100 or equivalently
If we want to decrease by Z%, the new value is
The regular price for a CD is X=$15. The CD is Z=10% off, so the sale price is
But we have to add the tax of Y=5%, so the final value is
The total price of the CD is $14.18