Chapter 1.2, Problem 20SBE

For these exercises, round all estimates to one decimal place.

A Tabulated Function The following table gives values for a function $N=N\left(t\right)$.

$t$	$N=N\left(t\right)$
10	$17.6$
20	$23.8$
30	$44.6$
40	$51.3$
50	$53.2$
60	$53.7$
70	$53.9$

Exercises S-1 through S-20 refer to this function.

Limiting Values Assuming that the function $N$ describes a physical situation for which a limiting value is expected, estimate the limiting value of $N$.