Questions on Algebra: Graphs, graphing equations and inequalities answered by real tutors!

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Question 121745: 1. In this problem, we will analyze the profit found for sales of decorative tiles. A demand equation (sometimes called a demand curve) shows how much money people would pay for a product depending on how much of that product is available on the open market. Often, the demand equation is found empirically (through experiment, or market research).

a. Suppose that a market research company finds that at a price of p = $20, they would sell x = 42 tiles each month. If they lower the price to p = $10, then more people would purchase the tile, and they can expect to sell x = 52 tiles in a month’s time. Find the equation of the line for the demand equation. Write your answer in the form p = mx + b. (Hint: Write an equation using two points in the form (x,p)).

Click here to see answer by jim_thompson5910(28504)

Question 121697: please assisyt me in the following:
Graph the following inequalities:
2x-2>5
7x-3>_16
Trying to help my daughter with her homework.
Randy
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Question 121746: A company’s revenue is the amount of money that comes in from sales, before business costs are subtracted. For a single product, you can find the revenue by multiplying the quantity of the product sold, x, by the demand equation, p.

b. Substitute the result you found from part a into the equation R = xp to find the revenue equation. Provide your answer in simplified form.

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Question 121747: d. Find the cost equation for the tile. Write your answer in the form C = mx + b.
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Question 121748: e. Find the Profit Equation by substituting your equations for R and C in the equation . Simplify the equation.
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Question 121750: f. What is the profit made from selling 20 tile sets per month?

g. What is the profit made from selling 25 tile sets each month?

h. What is the profit made from selling no tile sets each month? Interpret your answer.

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Question 121751: i. Use trial and error to find the quantity of tile sets per month that yields the highest profit.

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Question 121752: 2. The break even values for a profit model are the values for which you earn $0 in profit. Use the equation you created in question one to solve P = 0, and find your break even values.
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Question 121753: 3. In 2002, Home Depot’s sales amounted to $58,200,000,000. In 2006, its sales were $90,800,000,000.

a. Write Home Depot’s 2002 sales and 2006 sales in scientific notation.
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Question 121754: You can find the percent of growth in Home Depot’s sales from 2002 to 2006, follow these steps:

·Find the increase in sales from 2002 to 2006.
·Find what percent that increase is of the 2002 sales.

2. What was the percent growth in Home Depot’s sales from 2002 to 2006? Do all your work by using scientific notation.

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Question 121744: Find the slope of the line
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Question 121798: How would I solve this system of linear inequalities by graphing:

x - y < or = to 3 x + y > or = to 6
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Question 121801: How would solve this system by addition?

5x - 4y = -5 x - 2y = -7
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Question 121797: How would I solve this system by graphing:
x + y = 4
-x + y = 2
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Question 121802: How would solve this system by graphing?

3x + y = 6 3x - y = 0
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Question 121806: How would solve this system by addition?
2x - 4y = 7
4x - 2y = 9
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Question 121806: How would solve this system by addition?
2x - 4y = 7
4x - 2y = 9
Click here to see answer by checkley71(8403)

Question 121806: How would solve this system by addition?
2x - 4y = 7
4x - 2y = 9
Click here to see answer by solver91311(16868)

Question 121807: How would solve this system of linear inequalities by graphing?
x - 3y > 6
3x + 2y > 12
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Question 121809: How would solve this system by graphing?

x + y = 3 x + y = -1
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Question 121803: How would solve this system by graphing?

2x + y = 4 x + y = 3
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Question 121808: How would solve this system by graphing?
x + y = 3
x + y = -1
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Question 121799: How would solve this system of linear inequalities by graphing?

3x - y < 2, x + y > 2
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Question 121800: How would solve this system of linear inequalities by graphing?

3x - y < 2, x + y > 2
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Question 121789: How would I solve this system by addition:

5x - 4y = -5, x - 2y = -7
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Question 121788: How would I solve this system by addition:
5x - 4y = -5
x - 2y = -7
Click here to see answer by checkley71(8403)

Question 121792: How would I solve this system of linear inequalities by graphing:

3x - y < 2, x + y > 2

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Question 121838:
Find the slope of any line perpendicular to the line through the points ( 0, 5) and ( -3, -4)
please show work, i am stuck
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Question 121851: Write the equation of the line passing through the given pair of points. Write your result in slope-intercept form.
(-1,3) and (4,-2)
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Question 121848: Write the equation of the line passing through the given point with the indicated slope.
Give your results in slope-intercept form.Point:(0,5)slope:m= -3/5
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Question 121833: I need help to solve the inequality, I am going to write this the best way I can due to the symbols.
-13x+6>-12x-6
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Question 121869: Write the equation of the line L satisfying the given geometric conditions.

L has y-intercept (0,-3)and is parallel to the line with equation
y=2/3x+1
please show work and equation
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Question 121934: solve and show the equations used for the solution
Jill has $3.50 in nickels and dimes. If she has 50 coins, how many of each type of coin does she have?
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Question 121935: SOLVE AND SHOW THE EQUATIONS USED FOR THE SOLUTION
A COFFEE MERCHANT HAS COFFEE BEANS THAT SELL FOR $9 PER POUNDS AND $12 PER POUNDS. THE TWO TYPES ARE TO BE MIXED TO CREAT 100 LB OF A MIXTURE THAT WILL SELL FOR $11.25 PER POUND. HOW MUCH OF EACH TYPE OF BEAN SHOULD BE USED IN THE MIXTURE?
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Question 121942: Write the equation of the line passing through the given pair of points.
(2,-3) and (2,4)
show work and equation please
Click here to see answer by jim_thompson5910(28504)

Question 121943: Write the equation of the line L satisfying the given geometric conditions.
L has y-intercept(0,2) and is perpendicular to the line with equation 2x-3y=6
please show equation and work
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Question 121925: write the equation of the line with slope 5 and y-intercept (0,-3)
thanks for the help
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Question 121924: write the equation of a line passing through (4,4) and (4,2)
please help thank you
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Question 121937: solve system by substitution
8x-4y=16
y=2x-4
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Question 121938: solve system by substitution
4x-12y= 5
-x+ 3y=-1
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Question 121953: x+5/2=6
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Question 121930: solve the following systems by addition. If a unique solution does not exist, state whether the system is inconsistent or dependent.
2x+3y=1
5x+3y=16
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Question 121922: determine which two equations represent perpendicular lines
A. y= 4/7x-3
B. y=3x-4/7
C. y= -1/3x+4/7
D. y= 1/3x-4/7
i am completely confused
Click here to see answer by Fombitz(13828)

Question 121864: Write the equation of the line passing through the given pair of points
(2,-3) and (2,4)
Click here to see answer by scott8148(6628)

Question 122076: Find the value of r so that the line through (-4,3) and (r, -3) has a slope of 2/3.
Click here to see answer by ankor@dixie-net.com(15638)

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