Please show formula with answer.

Interest Rate. At what interest rate will it take to grow

a. $800to a value of 1,017.13 over 6 years?

b. $600 to a value of 1,082.08 over 5 years?

c. $401 to a value of 1,311.16 over 6 years?

Mortgages (Hint: P/Y=12).

What was the initial mortgage on the house?

a. $4,369.66 per month for 30 years at 8 percent interest?

b. $1,626.83 per month for 15 years at 4 percent interest?

c. $3,724.21 per month for 30 years at 18 percent interest?

Mortgages (Hint: P/Y=12). What is the payoff on a 30 year, 6% mortgage of

a. $255,413 with a payment of 1,321.33 with 8 years remaining?

b. $530,493 with a payment of 3,180.57 with 12 years remaining?

c. $297,266 with a payment of 1,782.26 with 11 years remaining?