The table below shows how much money a grocery store receives for selling different amounts of asparagus.
ASPARAGUS SALES
Number of Pounds
Total Sales
4 lb=
$10
6 lb=
$15
8 lb=
$20
10 lb=
?
12 lb =
?
If the unit rate is constant, what are the total sales for 12 pounds of asparagus?
A $22.50
B $25.00
C $30.00
D $32.50