Find the axis of symmetry and the coordinates of the vertex of the graph of the function y = 2x2 + 4x –3.

F(n + 1) = f(n) – 8. if f(1) = 100, what is f(6)?

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?

Aswimming pool measures 22ft by 12ft and is 4ft deep. if the pool is being filled at 2.5 cubic ft per minute, how long will it take to fill the pool?