Answer:
c=2 d=1
Step-by-step explanation:
The answer is 4. you distribute the negative to make a positive sign and then add
A=(a(b))/2
surface area and area are the same in 2D shapes
A= (1.5(1.2))/2 =(1.8)/2 = 0.9 m squared
Simple....

x<6
This means that on your graph at 6 it's a circle (not colored in) and it goes to the left indefinitely...
Thus, your answer.