a dugstore sells a drug costing $85 for $112 and a drug costing $175 for $238

A.) if the mark up policy of the drug store is assumed to be linear, write an equation that expresses retail price R in terms of costs( wholesale price)

B) what doews a store pay (to the nearest dollar) for a drug that retails for $185

answers:
A. R=1.4c-7
B. $137

i need solution and thanks ;)

Question

a dugstore sells a drug costing $85 for $112 and a drug costing $175 for $238

A.) if the mark up policy of the drug store is assumed to be linear, write an equation that expresses retail price R in terms of costs( wholesale price)

B) what doews a store pay (to the nearest dollar) for a drug that retails for $185

answers:
A. R=1.4c-7
B. $137

i need solution and thanks ;)

anonymous · Answer

What you want to do i here is realize that the markup policy is linear.  That mean...

|dw:1359143230412:dw|

anonymous · Answer

The slope represents the markup rate, which is assumed to be linear (meaning the markup rate must be constant).

In other words, cost is your x-variable and price is your y-variable.  Together you have two points on the markup plot:

(85, 112)
(175, 238)

These two points can be used to determine a line.