Зp = -27 anybody know the answer
1 answer:
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Answer:
A : $67.60
Step-by-step explanation:
Given:
Sales tax = 4%
She just bought a swimsuit whose full price was $80,
She presented the retailer with a coupon for $15,
Question asked:
What was the total amount that Elaine paid?
Cost price of swimsuit = $80,
She presented the retailer with a coupon for = $15,
Remaining price = 80 - 15 = 65
Now, sale tax imposed = 4% of 65
=
Sale price = Remaining price after deducting coupon + sale tax
= 65 + 2.60 = 67.60
Thus , $67.60 Elaine paid to the retailer.
We can expand the logarithm of a product as a sum of logarithms:
Then using the change of base formula, we can derive the relationship
This immediately tells us that
Notice that none of can be equal to 1. This is because
for any choice of . This means we can safely do the following without worrying about division by 0.
so that
Similarly,
so that
So we end up with
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Another way to do this:
Then
So we have