Figure out the costs of buying the two cars listed below by filling in the blanks in the table

Make/Model: 
Ford E-Series Wagon Van

MSRP: 
$28,760

Cost of options: 
$5,560

Sales tax: 
$2230.80 (this is based on 6.5% interest)

Total cost: 
$36550.80

10% down payment: 
$3655.08

Amount needed to borrow: 
$32895.72

Monthly payment: 
$665.62

Total interest paid: 
$4,665.51

Total payments:
60 payments of total $39,937.03

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!