10/2/1997

MATH 1142

QUIZ I (20 minutes)

(14 pt) 1) The cost of a travel to country A is given by the function

where f(n) is the cost in the nth month.

(6 pt) a) Find f(2), f(11) and f(6).

(8 pt) b) Draw the graph of the function and find when the cost is max.

(6 pt) 2) How do you relate the graph of f(x) to the graph of 2f(x+2)?