I NEED HELP ON THIS CONSTRUCTED RESPONSE! :(
1 answer:
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Answer:
Step-by-step explanation:
a). 'Per ml' cost of the small size =
=
= $0.018
'Per ml' cost of the medium size =
=
= $0.0199
'Per ml' cost of the large size =
=
= $0.01695
Therefore, expression to compare per ml cost of three containers will be,
$0.0199 > $0.018 > $0.01695
b). Least expensive way to buy the cleaner is to choose the container with least per ml cost.
Cost of 1500 ml cleaner = Cost of 1000 ml cleaner + Cost of 500 ml of cleaner
= Cost of 1000 ml cleaner container + Cost of 'n' containers of 250 ml container
Total cost of 1500 ml = $16.95 + $4.50n
= 16.95 + 2(4.5) [For n = 2]
= $25.95
c). Most expensive way to purchase 1500 ml cleaner is to choose the most expensive cleaners
Cost of 1500 ml cleaner = Cost of 'n' containers of medium size containers
= 9.95(n)
= 9.95(3)
= $29.85
We need to find an equation in the form 
.
To find
, we use the formula:
We'll use the points
and 
:
The value of
(the y-intercept) is the value of 
when 
, which is 25.
So the equation is
(choice A).
To find
We'll use the points
The value of
So the equation is