Max an his two friends carpooled on a visit to the zoo the cost of admission was $12 per person. parking cost $7 per car. how much did the group pay on their visit to the zoo?

y=7x+12

Step-by-step explanation:

If you already have to start with 12 the c variable supply’s to 7 cause you don’t know how many people

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!