Answer:
answer is D
Explanation:
p is how many packages were purchased.
c is how much it all cost
and the shipment fee is $6 and each package is $12.45. Nice
Let formulate our equation.
the total cost is the sum of the shipment fee and the total price of packages. Put into numerical and algebraic is:
c = 6+(12.45)p
we then make p the subject
c-(12.45)p = 6
-(12.45)p = 6-c
(12.45)p = c-6
p = (c-6)/12.45
this also means that:
how many packages I bought can be found by first:
taking out the shipment fee from the total:
c-6
Now that we have the price of the packages only. We can find how many packages by dividing the total price by how much the package cost.
(c-6)/12.45
therefore p = (c-6)/12.45