A package of 24 cookies costs $3.00. What is the approximate difference in the unit price from the original price if a $1.00 cou
pon is used?
A.
$0.05
B.
$0.08
C.
$0.12
D.
$0.13
A.
$0.05
B.
$0.08
C.
$0.12
D.
$0.13
2 answers:
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To make a positive profit p(x)>0 we need to make:
Now we solve this for x:
We have:
a = -2
b = 7
c = -3
We will use formula for quadratic equation:
We got two solutions. One is fraction other is whole number. We will not consider fraction because the amount of muffins sold must be whole number. So our solution is:
x>3
Now we solve this for x:
We have:
a = -2
b = 7
c = -3
We will use formula for quadratic equation:
We got two solutions. One is fraction other is whole number. We will not consider fraction because the amount of muffins sold must be whole number. So our solution is:
x>3