Which relation is a function {(2, 3), (1,5), (2,7)}
{(-1,5), (-2,6), (-3,7)}
{(11,9), (11,5), (9,3)}
{(3,8), (0,8), (3,-2)}

The relation that is a function is{ (-1,5), (-2,6), (-3,7) }. A function will not have any repeating x-values, they all have to be different.

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answer: $201

step-by-step explanation: to get the answer, you first get 3 nieces that he sold and multiply it by 67 and get $201, so he earned $201 selling his nieces.

so far i think you have the right thing going for you just remember soh cah toh

step-by-step explanation:

sine over hypotenuse

cosine   equals adjacent

tangent over hypotenuse