Answer:
105 were correct
Step-by-step explanation:
120 divided by 8 = 15. 15 questions were wrong.
15 times 7 = 105.
Answer:
prime
Step-by-step explanation:
Answer:
In three years, cost (Value) = 47.70
Step-by-step explanation:
When the decrease is relative to the last value, it is exponential.
Depreciations are usually exponential.
In three years,
Value = 70*(1-0.12)^3
= 47.70