There are some answers in this answer key that are wrong.
Q36, R8 resistance is 10 ohms, not 8 ohms. Answer should be D, not C.
Q57, House has two ranges:
14kW (not 14.4kW) and 13kW. 12kW = 6000W + (2000W * .25) = 6500W + (13000*.25) = 9750W. Answer doesn't exist.
Q72, 102V is right, but the answer should be B, not C.
Q87, R7 is 8 ohms, not 7 ohms. Answer should be C, not B.
Q98, R8 is 10 ohms, not 7 ohms. Answer should be 4.44W, which doesn't exist.
Q125, House has two ranges:
12kW and 14.4kW. 12kW = 6000W + (14400W*.25) = 9600W. Answer doesn't exist.
Q144, 2X^2-4X+2=0 breaks down to (X-1)(X-1) so X=1. Answer should be A, not C.
If I've done something wrong to get these, feel free to let me know.:thumbsup:
