Mathematics, 02.08.2019 16:40, emmagbales

You need exactly 47 bottles of water. you don’t want to buy more than you need, but you want the least expensive way. list the best way to buy exactly 47 bottles of water. single bottle: $1.25 6-pack: $7.20 12-pack: $13.80 case (20): $26.40

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If you bought single bottles it would be 1.25*47= $58.75
6-pack: If you bought exactly 8 6-packs you would get 48 which is one more than what you want AND it would cost you $57.60 which is cheaper than buying single bottles, but you are getting one more than what you need.
12-pack: 4 12-packs would be 48 bottles of water which is, once again, 1 more than what you need. It also costs 55.20 (it just keeps getting cheaper!)
Now for a case of 20: We don't even need to calculate this or anything because it would be way more than what you need (60 bottles because 40 wouldn't work) and it would be the most expensive.
So by what i've shown you the cheapest way is to ,if you can only choose one, get 4 12 packs. Unless you can mix it up a bit and buy 3 12 packs and 1 6 pack and 5 singles. (54.85 in total)
Hoping this wasn't too confusing and I helped a bit

answered: tatertott8592

2 (20 packs=$52.80
1 (6 pack=$7.20
1 (1 bottle=$1.25
altogether you spend $61.25 and have 47 bottles
hope i helped!!!

answered: Guest

the system of inequity is

$y\leq -x+4$

$3y> x$

step-by-step explanation:

from the given graph it is noticed that we have two related lines. one is solid and another is dashed.

if a line passing through two points, then the equation of line is

$y-y_1=\frac{y_2-y_1}{x_2-x_1}(x-x_1)$

the solid line passing through the points (0,4) and (4,0).

$y-4=\frac{0-4}{4-0}(x-0)$

$y=-x+4$

the related equation of solid line is $y=-x+4$ .

similarly, find the related equation of dashed line. the dashed liune passing through the points (0,0) and (3,1).

$y-0=\frac{0-1}{3-0}(x-0)$

$3y=x$

the related equation of dashed line is $3y=x$

from the given graph it is noticed that the point (0,1) lies on the shaded region, therefore the point (0,1) must be satisfied by the related equations.

check the related equations by the point (0,1).

$1=-0+4$

$1=4$

this statement is true if the sign of inequality is < instead of equality. since it is an solid line therefore the sign of inequality will be $\leq$ . the required inequality is

$y\leq -x+4$

similarly, check the second related equation.

$3(1)=0$

it is a dashed line, so this statement is true if the sign of inequality is > . the required inequality is

$3y> x$

15 points write a system of inequalities to represent the shaded portion of the graph

answered: Guest

where's the diagram?

step-by-step explanation:

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You need exactly 47 bottles of water. you don’t want to buy more than you need, but you want the lea...