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.

18

step-by-step explanation:

draw the shape and you will see that f and k are actually at adjacent vertices (points of the hexagon that are neighboring).   so find the distance between (1,2) and (4,2).   that is easy since (1,2) and (4,2) is just a vertical distance to count, which is 3.   it is a regular polygon which means all sides are congruent.   you have 6 sides (hexa) so multiply 6 by 3 to receive 18.

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step-by-step explanation: