Amount of an investment. The amount of an investment

of P dollars for t years at simple interest rate r is given by
A � P � Prt.
a) Rewrite this formula by factoring out the greatest
common factor on the right-hand side.
b) Find A if $8300 is invested for 3 years at a simple
interest rate of 15%.

I am sure you meant to type

Amount = P + Prt
which becomes

a) Amount = P(1 + rt)

b) Amount = 8300)1+.15(3)) = 12 035

a) To rewrite the formula by factoring out the greatest common factor, we need to identify the common factors in the expression Prt. In this case, the greatest common factor is P. We can rewrite the formula as:

A = P(1 + rt)

b) To find A when $8300 is invested for 3 years at a simple interest rate of 15%, we can substitute the given values into the formula:

P = $8300, t = 3 years, and r = 15%

A = $8300(1 + 0.15*3)

A = $8300(1 + 0.45)

A = $8300(1.45)

A ≈ $12035

Therefore, the amount A after 3 years will be approximately $12,035.