Ask question

Ask question

All categories

3 years ago

15

How do I solve these problems I'm trying to find the cheapest deal

2 answers:

atroni [7]3 years ago

7 0

2.79 / 2 = 1.395 rounds to 1.40 per roll
8.99 / 6 = 1.498 rounds to 1.50 per roll

the better deal (cheapest) is the 2 roll package

** if u want price per roll (price / roll) ...u divide the price by the number of rolls

ozzi3 years ago

3 0

Take the total price and divide by the number of rolls that will tell you the price per roll

You might be interested in

You’ve got a garden that is 10 ft by 12 ft.

ch4aika [34]

That’s a pretty average sized garden

8 0

3 years ago

The initial cost of an office fax machine is $100. After 1 year, its value becomes $80. Which is the correct linear depreciation

Elis [28]

Answer:

$y=100-20x$

Step-by-step explanation:

Let the x-axis be the time (in years) and the y-axis the value of the fax machine (in dollars).

We know that the initial value of the fax machine is $100; in other words, when the time is zero years, the value is $100, or as an ordered pair (0, 100). We also know that after 1 year the value decreases to $80, so (1, 80).

Now we can find the slope of the line passing through those two points using the slope formula

$m=\frac{y_2-y_1}{x_2-x_1}$

where

$m$ is the slope

$(x_1,y_1)$ are the coordinates of the first point

$(x_2,y_2)$ are the coordinates of the second point

Replacing values:

$m=\frac{80-100}{1-0}$

$m=-20$

Now, to complete our model we are using the point slope formula

$y-y_1=m(x-x_1)$

where

$m$ is the slope

$(x_1,y_1)$ are the coordinates of the first point

Replacing values:

$y-100=-20(x-0)$

$y-100=-20x$

$y=-20x+100$

$y=100-20x$

We can conclude that the correct linear depreciation model is $y=100-20x$

7 0

3 years ago

Lee likes to water ski on his brother's boat and plans to ski for two days in a row. The boat takes two gallons of gas each hour

riadik2000 [5.3K]

Answer:

120 dollars

Step-by-step explanation:

6 hours per day, for 2 days, leads to a total of 12 hours (2*6 = 12)

If it takes 2 gallons of gas to run the boat for 1 hour, then it will take 24 gallons to run for 12 hours. We can see this if we have the ratio below

2 gallons: 1 hour

12*(2 gallons): 12*(1 hour) .... multiply both sides by 12

24 gallons: 12 hours

Now multiply this gallon count (24) by the cost per gallon ($5) and we get to 5*24 = 120

3 0

3 years ago

3 pounds of bananas costs $1.5. What is the constant of proportionality that relates the cost in dollars. y, to the number of po

abruzzese [7]

I think it’s the answer is 0.5

7 0

3 years ago

Solve for e <br> 9e-7=7e-11

Scilla [17]

Answer:

e = -2

Step-by-step explanation:

9e-7=7e-11

Subtract 7e from both sides

9e-7e -7=7e -7e-11

2e -7 = -11

Add 7 to each side

2e -7+7 = -11+7

2e = -4

Divide each side by 2

2e/2 = -4/2

e =-2

3 0

4 years ago

Read 2 more answers