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February 6, 2016

# Homework Help: Math Word Problems

Posted by Lisa on Friday, September 14, 2007 at 4:23pm.

Citydog Screen Printers received two orders for a t-shirt designed for a math symposium. The first order was for 40 shirts at a total cost of \$295 and the second order was for an additional 80 shirts at a total cost of \$565. Each order included a shipping and handling charge.

Then we have to writer a linear equation, for which I got: y-27/4x+25. We also had to find the cost per t-shirt, for which I got: \$31.75. The last part I don't understand, however: fidn the shipping and handling charge.

If anyone could help, I would really appreciate it. Thanks in advance.

The second word problem is:
It costs Consolidated Cereals Corporation \$1050 to produce 100 boxes of corn flakes and \$1250 to produce 500 boxes. I found the cost function: c(x)=1/2x+1000 but don't know how to determine the fixed cost and the variable cost per box (mainly because I have no idea what those are.)

• Math Word Problems - bobpursley, Friday, September 14, 2007 at 6:52pm

I dont agree with your solution to the first question.

Cost= m x+b

x is the cost per shirt, b is the handling charge

295=40m+b
565=80m+b
subtract the first equation from the second:
370=40x solve for m, the cost of each shirt. Then solve for b, put all that into y= mx+b
One the second question,
Cost= variable cost * n + Fixedcosts or
cost= n*v+F

1250=500v+f
1050=100v+f
subtract the second equation from the first
200=400v solve for v, and it is 1/2 dollar. Solve for f, the fixed cost, and it looks as if it is 1000 dollars.

• Math Word Problems - Lisa, Friday, September 14, 2007 at 10:15pm

Thanks for your help, but my teacher wanted me to use point-slope form to solve the equations rather than subtracting one equation from the other. Do you know how to do that?