Tutors Answer Your Questions about Linearsystems (FREE)
Question 56258: A company that manufactures bikes has a fixed cost of $100.00. It costs $100.00 to product each bike. The selling price per bike is $300.00
1. write the cost function, C
2. write the revenu function, R
3. determine the breateven point. Describe what this means.
Click here to see answer by funmath(2926) 
Question 56258: A company that manufactures bikes has a fixed cost of $100.00. It costs $100.00 to product each bike. The selling price per bike is $300.00
1. write the cost function, C
2. write the revenu function, R
3. determine the breateven point. Describe what this means.
Click here to see answer by Edwin McCravy(13211) 
Question 56277: A company that manufactures bikes has a fixed cost of $100,000. It costs $100.00 to product each bike. The selling price per bike is $300.00
1. write the cost function, C
2. write the revenu function, R
3. determine the breateven point. Describe what this means.
you guys were right, i DID type the fixed cost wrong lol, thanks for your help!
Click here to see answer by stanbon(69061) 
Question 48127: We were told to solve these systems by graphing but, on the graph he has a place for six points it is mapped out as:
x y1 y2
0 0 0
0 0 0
My first problem is x + 2y = 4
x + 2y = 2
My solutions were x = (0,2) (4,0)
y = (4,1)(0.4)
How do i graph this where do I place the numbers on the graph.
Click here to see answer by rchill(405) 
Question 56573: plese help me out with this. Im totally confused on what to do. Heres the problem An express train travels 80km per hour from Ironton to Wildwood. A local train, traveling at 48km per hour, takes 2 hours longer for the same trip. How far apart are Ironton and Wildwood?
Click here to see answer by tutorcecilia(2152) 
Question 56573: plese help me out with this. Im totally confused on what to do. Heres the problem An express train travels 80km per hour from Ironton to Wildwood. A local train, traveling at 48km per hour, takes 2 hours longer for the same trip. How far apart are Ironton and Wildwood?
Click here to see answer by ankor@dixienet.com(18980) 
Question 56574: Plese help me out on this.I dont know what equation to use. Here is the problemA cheeta is 300 ft. from its prey.It starts to sprint towards its prey at 90 ft. per second. At the same time, thee prey starts to sprint at 70 ft. per second. When will the cheeta catch its prey?
Click here to see answer by ankor@dixienet.com(18980) 
Question 56807:
I am solving by addition method. These two equations have a bracket at the left end emcompassing both of the equations.
{2x + 3y =8
{5x + y = 3
remember the bracket at the left encompassing both equations. I can't draw one to go for both lines.
my attempt
{2x + 3y =8 15x+10y=40
{5x +y =3 50x10y= 30
65x = 70
x= 1.76
Then i have to plug back in to the equation:
2x + 3y =8
2(1.76)+3y =8
3.52 + 3y =8
3y=4.48
y= 1.49
Is this correct? Help!
Click here to see answer by stanbon(69061) 
Question 56846: Find the coordinates of the vertices of the triangle whose sides are contained in the lines whose equations are 5x  3y = 7, x + 2y = 9, and 3x  7y = 1.
5x  3y = 7
x + 2y = 9 > x = 2y + 9
3x  7y = 1
5(2y + 9)  3y = 7
10y + 45  3y = 7
13y + 45 = 7
 45 on both sides
13y = 52
divide by 13 on both sides
y = 4
put 4 back into the equation to find x:
5x  3(4) = 7
5x  12 = 7
add 12 to both sides:
5x = 5
x = 1
(1, 4)
check answers:
5x  3y = 7 > 5(1)  3(4) = 5  12 = 7 (correct)
x + 2y = 9 > 1 + 2(4) = 1 + 8 = 9 (correct)
3x  7y = 1 > 3(1)  7(4) = 3  28 = 25 is not equal to 1. (incorrect)
Click here to see answer by funmath(2926) 

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