A ( t ) = 2500 * (1.04) ^t
A ( t ) = 5000
5000 = 2500 * (1.04)^t
( 1.04 ) ^t = 5000 : 2500
(1.04)^t = 2
t = 17.68 ≈ 18
The value of t is 18 years.
Answer:
Hence there is a strong probability the true proportion of patients who get relief from headaches while on this medication is greater than 80%.
Step-by-step explanation:
The required truth is " there's strong evidence this medication reached its the goal of quite 80% of patients getting relief. " Because we wanted to check whether the new medication offers relief for quite 80% of patients or not.
Using the compound interest formula,
572.86=287,50(1+i)^8
(1+i)^8=572.86/287.50=1.992557
1+i=(1.992557)^(1/8)=1.0899996
=>
i=1.0899996-1=9%
Note: This problem can also be solved in the head using the rule of 72.
Since after 8 years, the amount is roughly doubled, we can say that the interest rate is approximately 72/8=9%
OK, I can do that. But you'll have to tell me what the function rule is.
Every function is a different rule.
