Melody

Do you mean

$$4^{-16} = \frac{4^{-16}}{1}=\frac{1}{4^{16}}$$

2•       1, 4, 9, 18, 35, 68.......                $$T_n=2^n+n-2$$

(8.7*10^(8))*(3.5*10^(-12))=

Put it into the calc like this.    :)

use acos   It is the same thing.

American General offers a 14-year annuity with a guaranteed rate of 5.62% compounded annually. How much should you pay for one of these annuities if you want to receive payments of $1500 annually over the 14 year period?

this is the present value of an ordinary anuity

i= 0.0562,         n=14,       C= 1500       find PV

You can plug the numbers in.  

maybe you might find this interesting

$$\\(5.66million)*2=(5.6million)*e^{0.02t}\\
2=e^{0.02t}\\
ln2=ln\;e^{0.02t}\\
ln2=0.02t * ln\;e\\
ln2=0.02t \\
t=\frac{ln2}{0.02}$$

$${\frac{{ln}{\left({\mathtt{2}}\right)}}{{\mathtt{0.02}}}} = {\mathtt{34.657\: \!359\: \!027\: \!997\: \!265\: \!5}}$$

34.66 years correct to 2 decimal places.

Thank you Bertie and Alan, I really liked your explanations. 

$$\\5^1=5\\\\
5^0=1$$

Any number raised to the power of 1 will stay the same.

any number  (I don't know about 0) raised to the power of 0 = 1

@@ End of Day Wrap      Fri 27/2/15      Sydney, Australia     Time 10:00 pm        ♪ ♫

G'day,

Today our great answers were supplied by DemandingWaffle, Bertie, Alan, Labby, Garmoon, Tetration, CPhill, Geno3141, darkBlaze347, theJonyMyster, Collegeguy79 and Roxmimi.  Thank you. 

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