We are comparing areas, so square of the linear dimension
Relative cost per unit area
12^2/6=24
16^2/10=256/10=25.6
Since 24<25.6, the 12" pizza is a better deal.
Note: we could compare exact area by calculating A=pi (d^2)/4, but since it is a relative comparison, the result will be the same, albeit more work.
Answer:
I am not sure about this question sry but u can try asking a tutor
Yes you did get them all right
Missing data:
Almond Prices
Number of Pounds
Cost (per pound)
up to 10
$20
more than 10, and up to 20
$15
more than 20, and up to 30
$10
more than 30
<span>$5
</span>
A) a horizontal line with an open circle at (20, 10) and a closed circle at (30, 10); $207.50
B) a horizontal line with a closed circle at (20, 10) and an open circle at (30, 10); $207.50
C) a horizontal line with an open circle at (21, 10) and a closed circle at (30, 10); $311.25
<span>D) a horizontal line with a closed circle at (21, 10) and an open circle at (30, 10); $311.25
</span>
20.75 pounds is in the more than 20, and up to 30 ; <span>$10 range.
y = 10(20.75)
y = 207.50
open circle means less than or greater than. close circle means "less than or equal to" or "greater than or equal to"
</span><span>My answer : A) a horizontal line with an open circle at (20, 10) and a closed circle at (30, 10); $207.50</span><span>
</span>
then 
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