posted by anna .
The winning time int he womens Olympic 200 meter dash w is a function of the year x in which the event was run, starting with 1948 and is given by the equation
w= f(X)= -0.0661X+152.8
A. PREDICT THE WINNING TIME FOR THE 1988 OLYMPICS. ( THE ACTUAL TIME WAS 21.34 SECONDS)
B. FIND F^-1(W)
C. USE F^-1(W) TO PREDICT IN APPROXIMATELY WHAT YEAR THE WINNING TIME WILL BE 20 SECONDS