Answer: 3x3=9, 4x5=20, 8x9=72, and 7x3=21!
Step-by-step explanation:
Answer:

Step-by-step explanation:
Given


Required
Solve graphically
See attachment for graph;
The black shade represents
While the green, represents 
Next, determine the intersection points between the two lines
From the attached graph, we have:

<em>Hence, the solution is:</em>