Question 110839
<pre><font face = "book antiqua" color = "indigo" size = 6><b>
Then when x=0 (when it was no years after 1960,
that is, the year 1960), the corresponding value 
for y was .80.

Then x=20 (when it was 20 years after 1960, that 
is, the year 1980), the corresponding value for y 
was .50

So the two values of x to input into the function 
are 0 and 20. The corresponding values of y are
.8 and .5 respectively.

Edwin</pre></font>