Find each difference. If you get stuck, consider drawing a number line diagram. 1. 9 - 4

2. 4 - (-9)

3. 50 - 400

4. -50 - (-200)

5. -120 - 400

6. 0 - (-200)

7. 2 + 3

8. (-11) + 2

9. (-6) - (-3)

10. 2 - (-11)

Find the value of x for which the lines are parallel.

Asmall business produces and sells balls. the fixed costs are $20 and each ball costs $4.32 to produce. each ball sells for $8.32. write the equations for the total cost, c, and the revenue, r, then use the graphing method to determine how many balls must be sold to break even.

Miss henderson wants to build a fence around a rectangular garden in her backyard in the scale drawing the perimeter of the garden is 14 in of the actual length of a b is 20 ft how many feet of fencing what you need