he formula to be used for ordinary annuity is: PV = PMT x (1-(1+rate)^-n) / rate

Explanation:

1) PV is $350,000

The formula to be used for ordinary annuity is: PV = PMT x (1-(1+rate)^-n) / rate

2) This is ordinary annuity calculation for the six $30,000

PV = 200,000 + (30,000 x (1-(1+0.10)^-6) / 0.10) = 200,000 + 130,657.821 = 330,657.82

3) Ordinary annuity for the six 100,000

PV = 100,000 x (1-(1+0.10)^-6) / 0.10 = 435,526.07

how do do calculate the formula PV = PMT x (1-(1+rate)^-n) / rate the negative exponent is killing me.