Answer : Remaining two observation becomes 97 and 107.
Explanation :
Since we have given that
Mean = 100
Modal value = 98
Range = 10
As we know that ,
Range = Highest-Lowest
Let highest observation be x
Let lowest observation be y
So equation becomes x-y=10 ----equation 1
So, observation becomes
x,98,98,y
Now, we use the formula of mean i.e.
Mean = 
So, mean =
So our 2nd equation becomes
x+y=204
On using elimination method of system of linear equation on these two equation we get,
x=97
and

Hence , remaining two observation becomes 97 and 107.
Tax
$350x0.07
=$24.50
(0.07 is the 7% tax in decimal form)
Total cost
$350+$24.50
=$374.50
OR
$350x107%
=$374.50
1.07 is the table cost (100%) plus the sales tax (7%)
The table costs $374.50 with tax.
Is 10 and 15 because they both have a value of .909
Answer:
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