SOLUTION: The cost of developing pictures is a linear function of the number of pictures ordered. We placed two orders. The first order had 50 pictures and cost $3.75. The second order had
Algebra ->
Linear-equations
-> SOLUTION: The cost of developing pictures is a linear function of the number of pictures ordered. We placed two orders. The first order had 50 pictures and cost $3.75. The second order had
Log On
Question 1043717: The cost of developing pictures is a linear function of the number of pictures ordered. We placed two orders. The first order had 50 pictures and cost $3.75. The second order had 54 pictures and cost $3.95. Find the cost as a function of the number of pictures Answer by josmiceli(19441) (Show Source):
You can put this solution on YOUR website! You are given two points on the line:
( 50,3 )
( 54,3.95 )
Let where is cost
and is the number of pictures ordered
--------------------------------------
Use the general point-slope formula
Multiply both soides by
-----------------------
check:
( 50,3 )
------------------------
( 54, 3.95 )
OK
