Posted by Kirk on Sunday, July 24, 2011 at 4:11pm.
Suppose you have a cookie stand, and when you charge $3 per cookie box you sell 200 boxes. But when you raise your price to $4 you only sell 120 boxes. Write the equation for the number of boxes you sell as a function of the price you charge. Denote "b" for the number of boxes, and "p" for prices you charge, assume the function is linear.

MAT101  Damon, Sunday, July 24, 2011 at 4:52pm
b = k p + c where k and c are constants
200 = k (3) + c
120 = k (4) + c
subtract
80 = 1 k
so
k = 80
back to first eqn
200 = 80(3) + c
200 = 240 + c
c = 440
so
b = 80 p + 440

MAT101  Kirk, Sunday, July 24, 2011 at 5:22pm
Thank you, I was stuck on this for several hours to how to write this out, thank you again!
Answer This Question
Related Questions
 Math 101  Suppose you have a cookie stand, and when you charge $3 per cookie ...
 Math  Suppose you have a cookie stand, and when you charge $3 per cookie box ...
 MAT101  6. Suppose you have a lemonade stand, and when you charge $2 per cup of...
 MAT101  6. Suppose you have a lemonade stand, and when you charge $2 per cup of...
 algebra  the basketball team is trying to raise $475 for new uniforms if they ...
 Math  Suppose you have a lemonade stand, and when you charge $1 per cup of ...
 Algebra  a. Suppose that a market research company finds that at a price of p...
 Super teacher worksheet  Liam bakes two doze thank giving cookie he put an ...
 math  have 10 boxes each box contains 50 peices and we're selling for 8.00 per ...
 math  A cereal company finds that the number of people who will buy one of its ...
More Related Questions