Answer:
12.1
Step-by-step explanation:
to doublecheck times it 8 to see if you get 96.8
Continuous interest is Pe^(rt), but you are doubling your money in nine years so you want 2P=Pe^9t. Now divide both sides by P so 2=e^9t. Now take the ln of each side so ln2=9t. then just divide by 9. You will get a decimal, so move the decimal two places to the right to get your interest rate.
Using technology, we do
https://www.desmos.com/calculator
graph
y=3^(x-7)
y=2log(2x)
see where they intersect
we get at x=7.79
nearest tenth is 7.8
Answer:
y=-2x
Step-by-step explanation:
Answer: ,
Step-by-step explanation:
= 18
The common difference = -3
Therefore :
,
check:
when n = 2