-7-9, because he already starts below the surface by 7 feet then digs 9 inches lower
Graph a... you go down on the y axis 3, and then using the rise over run method, you go up 3, over 4
Answer:

Step-by-step explanation:
Distance Formula: 
Simply plug in the 2 coordinates into the distance formula to find distance <em>d</em>:







-/7? imagine that there is an -1 as the numerator. so now -/7 turns into -1/7
Answer:
11. parallelogram, rectangle
12. parallelogram, rhombus
13. parallelogram, square