math
posted by Debbie on .
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%

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))
= .... 
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" 
Is this the same as PV formaula?

No. That is Boyle's gas law.