If there is a 5% drop every month, then the class becomes 1-5%=1-0.05=0.95 times the previous size.
The formula for

months would be

so for 12 months it would be
-(-z + 3) equals z - 3
5 = z - 3
z = 8
In general, the exponential growth function is given by the formula below

Where a and r are constants, and x is the number of time intervals.
In our case, n=0 for 1960; therefore, 1968 is n=8,

And 1976 is n=16

Solve the two equations simultaneously, as shown below

Solving for a,

a) Thus, the equation is

b) 1960 is n=0; thus,

The answer to part b) is $1.113043... per hour
c)1996 is n=36

The model prediction is above $5.15 by $0.55 approximately. The answer is 'below'
Yes 3.812 is greater than 3.617
Answer:
7 days
Step-by-step explanation:
The watch was set 20 seconds behind already, at the start. The watch has lost 7 more seconds at the rate of 1 second per day.