Find the average rate of change of k(x) = 3x between x = 4 and x = 4 + h, where h 0. Simplify your answer. Your answer may be a number or an expression in terms of h.

If there are 12 moths and some have 31 days and others have 30 days how many have 28 days?

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?

Graph the function =gx+2x3 and give its domain and range using interval notation.