Answer:
C}
Step-by-step explanation:
Add 1
0.7+1=1.7
1.7+1= 2.7
etc., etc.
The answer is 21 which comes from 7 * 3.
Draw the four points in a complex plane. From the drawing you can see that the lenght is 4i - (-3i) = 4i + 3i = 7i, and the width is 1 - (-2) = 1 + 2 = 3.
So, the area is 7 * 3 = 21.
The formula for triangle area is b•h/ 1/2. so you would do 12•5=60. then divide that by 2 to get 30
