Which one do you need help on
Answer:

Step-by-step explanation:
The Exponential Product rule tells us that...

Therefore,
.
Therefore, 
Answer: changed by $48
Step-by-step explanation: 6 times $4 = $24 + $4 times 6 = $24 total= $48
Also $4 times 12 = $48
D≈2π(6371-1737.5)
d≈9267π
d≈29113.1km (to nearest tenth of a kilometer)