The net of an isosceles triangular prism is shown. what is the surface area, in square units, of the triangular prism? three rectangles are shown, one below the other. the middle rectangle has a width of 6 units, and, along each width, is a triangle with a height of 4 units. the  length of the lowermost rectangle is 8 units and its width is 5 units.

can you give any more details then what you just shown?

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!