K={(2, 1), (3, 2), (4,1), (5,3)} is k^-1 a function and why?
yes, each element in the domain has only one range value.
yes, each element in the range has only one domain value.
no, each element in the domain does not have one range value.
no, we don't know the original function and therefore can't make the determination,

Find the value of a. the diagram is not to scale. a quadrilateral is drawn. the upper and lower sides are parallel. the interior angle in the upper left corner is labeled a degrees. the angle in the upper right corner is labeled 113 degrees. the angle in the lower right corner is labeled b degrees. the angle in the lower left corner is labeled 36 degrees. a. 36 b. 144 c. 54 d. 126

Determine the volume of a cylinder bucket if the diameter is 8.5 in. and the height is 11.5 in.

Icould really use some with this question.