SOLUTION: I have tried these questions and this is what I have got so far but I am lost and totally confused, please help me I cant affor to fail...Thank you Our fund raising committee

Question 315239: I have tried these questions and this is what I have got so far but I am lost and totally confused, please help me I cant affor to fail...Thank you

Our fund raising committee is going to sell T-Shirts to raise support for our school. Signature Shirts is charging us a flat $50 set up fee, and then a charge of $6.50 per shirt for the printing.
Using � t� for t-shirts, what is the function for our T-Shirt order?

Using your above function, what would be the value of F(50)?
F(50)=6.50+50*50=2825.00
Using your above function, what would be the value of F(100)?
F(100)=6.50+100*100=1065.00

We have decided to base what we charge for the T-Shirts on the total cost per shirt. What would be an appropriate domain? Range? Why did you choose those values?
In the past, we have done a variety of fund raisers for our committee. For example, we printed hats one year. The function for the cost of the hats (including the $15.50 set up fee) was
F(x) = 2.09x + 15.50 =214.05
We sold 95 hats that year. How much was our total bill from Signature Shirts? (Yes, they do hats, too�)
How many hats would we have sold had we paid Signature Shirts $341.54?
What is our slope of this function?
What is our y-intercept?

Answer by Fombitz(32388) (Show Source): You can put this solution on YOUR website!
Your equation is incorrect.
Think about it this way.
The T-shirt company charges the $50 whether you sell zero t-shirts or 1,000,000 t-shirts.
So that cost is a constant, that is, it's NOT a function of t, the number of shirts.
The per-shirt cost is $6.50/shirt. The units should be the give-away. It has units of $/shirt and it needs a # of shirts multiplier to give you units of cost($).
.
.
.
$=($/shirt)*shirt
.
.
.
OK, so now the function looks like,

Now work through the problems and see how it goes.
Re-post if you get stuck.
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