Answer:
current value = 21000(1 - 0.05)^n
Step-by-step explanation:
This is a standard depreciation formula where n is the number of years.
It’s either volume or matter
Answer:
x = 4
Step-by-step explanation:
Using the rule of logarithms
x = n , then x = 
Given
(5 + 11x) = 2 , then
5 + 11x = 7² = 49 ( subtract 5 from both sides )
11x = 44 ( divide both sides by 11 )
x = 4