Posted by **Debbie** on Wednesday, March 4, 2009 at 12:35pm.

Amount of an Investment. The amount of an ivestment of P dollarsfor T years at simple intrest rate r is given by

A=P+PrT

a)Rewrite formula by factoring out the greatest common factor on the right hand side.

b)find A if $8300is invested for 3 yrs at simple intrest rate of 5%

- math -
**Reiny**, Wednesday, March 4, 2009 at 12:43pm
A=P+PrT

A = P(1 + rt)

in b) sub in 8300 for P, 3 for t, and .05 for r

A = 8300(1 + 3(.05))

= ....

- math -
**drwls**, Wednesday, March 4, 2009 at 12:45pm
a) A = P(1 + r T)

b) They are asking you to compute

8300*[1 + (0.05*3)] = 8300*1.15

"*" means the same at "x"

- math -
**Debbie**, Wednesday, March 4, 2009 at 1:00pm
Is this the same as PV formaula?

- math -
**drwls**, Wednesday, March 4, 2009 at 2:44pm
No. That is Boyle's gas law.

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