Find a formula for the general term an of the sequence, assuming that the pattern of the first few terms continues. (assume that n begins with 1.)−8, 163, − 329, 6427, − 12881,

Two years ago a man was six times as old as his daughter. in 18 years he will be twice as old as his daughter. determine their present ages.

What is the slope of the line that passes through the points (–9, 2) and (0, 4)? the slope of the line is

Jessica is organizing a guided tour of the rain forest. the average profit per person that the touring company makes is given by the rational expression 18x+35/x, where x is the number of people going on the tour. what does the numerator of this rational expression represents?