Find the weight of a package that can be shipped for $12.50 using the equation y = 3x + 5 where y is the total cost and x is the weight of the package.

2.5

Step-by-step explanation:

So you know that y is the total cost so you can put $12.50 in to substitute y.  You then end up with the equation $12.50 = 3x+5.  Nest you need too get x by itself so subtract 5 from the left and subtract 5 from the 12.50 which leaves you with $7.50 = 3x.  Next we have too divide both &7.50 and 3x by 3 to get x by itself.  This leaves you with 2.5 = x.  Therefor your answer is 2.5.

y + 11 = (1/4)(x + 16)

step-by-step explanation:

ok thats very interesting