An approximate number, that can be calculated mentally, is by using the rule of 72: Divide 72 by the interest in % to give the number of years needed to double the money.
In this case, the approximate number of years
n= 72/4=18 years (approximately)
Precise value by compound interest formula:
2P=P*(1.04)^n
=>
1.04^n=2
take logs on both sides
nlog(1.04)=log(2)
n=log(2)/log(1.04)=17.673 years
Answer:
-7
Step-by-step explanation:
The relative minimum is the smallest y value
The relative minimum is -7
Im sorry wish i could help but the equation is a little confusing give me a few moments and i will figure out the answer okay?
Answer:
funny
Step-by-step explanation:
funny
Answer: 5 Extra dolls
Explanation: 400 divide by the 8 months equals 50 plus the 5 extra from 405
