Given:
The exponential function is
To find:
The percentage rate of increase or decrease.
Solution:
The general form of an exponential function is
...(i)
Where, a is the initial value, r<0 is the rate of decrease, r>0 rate of increase, x is time period.
We have,
It can be written as
...(ii)
On comparing (i) and (ii), we get
r>0, so the it is the rate of increase. Multiply it by 100 to get the percentage rate of increase.
Therefore, the percentage rate of increase is 7.4%.
Word problems are the best to model real world problems. Most word problems use real world situations and problems that need a solution that can be solved through operations
A, B, and C are all correct.
By using trigonometry function
sin , cos , tan...