Answer:
15% off
Step-by-step explanation:
She has to give 9 ounces of potato salad to each guest and 9 guests coming over.
EQUATION: 9*9=amount of potato salad=81 ounces
It turns out that 5% of 400 is 20.
(1/20)*400=20.
So Ian was being paid £400 a week before he was given a pay rise.
The logarithm of 10 to base 10 is 1
<h3>How to determine the logarithm?</h3>
The given parameters are:
Base = 10
Number = 10
So, the expression is:

As a general rule;

The above means that;
When the base and the number are the same, the logarithm is 1
So, we have:

Hence, the logarithmic value is 1
Read more about logarithm at:
brainly.com/question/20785664
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