The following summation are Fibonacci numbers starting with F₁ = 1. ( that is 1, 1, 2, 3, 5):- F₁ + F₂ + F₃ + + Fₙ = Fₙ + 2.
Is this True or False?
If false how can you change it so it's true?

At the beginning of 1974/75,2 years a man invested #2000 in a bank at 12.5% compound interest, if it degree #650 at the end of each two years to pay his son's school fees, after payment of interest to pay his son's school fees, how much did he have left at the beginning of the 1978/79 school year?

At the electronics store you have a coupon for 20% off up to 2 cds you buy for cds with the original cost of $10.99 each the sales tax is 5% what is the total cost of your purchase

If t17 = 3 (t5) in an arithmetic progression, find t1 in terms of d.