Answer:
B and C
Step-by-step explanation:
A = -25
B = 9
C = 9
D = -9
E = -25
Old value of 5 devices = 657
New value of 5 devices = 663
Increment cost of 5 devices
663 - 657
6
Therefore the increment for one device
6 / 5
1.2
Answer:
1. True, 2. False, 3. I am blind.
Step-by-step explanation:
For the 3rd one I cannot confirm becaue I am blind.