suppose your school is selling magazine subscriptions. Each subscription costs $20. The company pays the school of the total sales in dollars. The school must also pay a one-time fee of $18??? Write and solve an equation to determine the fewest number of subscriptions that can be sold to earn a profit of $200.

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!

y=mx+

i believe the answer is the polygon, heptagon.