1 Which expression is equivalent to 4 − (−7)? A 7 + 4

B 4 − 7

C −7 − 4

D −4 + 7

Determine whether the set of whole numbers is closed under addition. explain why the set is or is not closed. give an example.

Quadrilateral efgh was dilated with the origin as the center of dilation to create quadrilateral e'f'g'h'. the quadrilateral was dilated using a scale factor of 2.5. the lengths of the sides of quadrilateral efgh are given. what is the length of side f'g'?

The graph below shows the line of best fit for data collected on the number of cell phones in cell phone cases sold at the local electronic store on four different days