Use the given cost table for the same product from two different companies to create a linear system. Then solve the system to determine when the cost of the product will be the same and what the price will
be.
Letk(n) represent the cost for Company 1 and let m (n) represent the cost of Company 2, where n is the
number of tons of road salt.
Road Salt (tons)
Company 1
$1,725
Company 2
$2,550
5
10
$3,150
$3,700
15
$4,575
$4,850
n +
ſk(n)=
m(n)= (
n +
Both Company 1 and Company 2 charge $
for
tons of road salt.
ed

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first option

a function is a relation in which an input is paired with exactly one output.

so, let's find the right answer.

in our first option, our inputs are january, february, and march. the outputs are 30, 28, and 25. each input has it's own output. this is correct!

our second option we know is incorrect, because ms. valverade has two outputs, dogs and cats. this is not a function.

our third option is incorrect as well. the yellow square has two ouputs, the square and the triangle.

lastly, in our fourth option, we see the number 7 two times with a different output. therefore, this is not a function.

remember: each input must be paired with only one output!