$1.89 all you have to do is subtract the final cost to the cost before taxes.
Answer:
m= -3
Step-by-step explanation:
You should do m = -1 - 2 x 1 - 0 which equals m = -3
Answer:
The linear equation is V - IR =0
The total current is 2.5 amps
Step-by-step explanation:
According to ohms law, the voltage (V) applied is directly proportional to current (I)
Therefore, V = IR
V - IR = 0 (R is resistance)
When V = 20, I = 1
The 1st equation is 20 - R = 0
When V = 60, I = 3
The 2nd equation is 60 - 3R = 0
From the 1st equation, R = 20
Substiting R = 20, V = 50 into the linear relation V - IR = 0
50 - 20I = 0
50 = 20I
I = 50/20 = 2.5 amps
