Chapter 1.CR, Problem 4CR

Reminder Round all answers to two decimal places unless otherwise indicated.

High School Graduates The following table shows the number, in millions, graduating from high school in the United States, in the given year.

$t=\text{Year}$	$N=$ Number graduating
$1985$	$2.83$
$1987$	$2.65$
$1989$	$2.47$
$1991$	$2.29$

a. Explain in practical terms what $N\left(1989\right)$ means, and find its value.

b. Use functional notation to express the number of graduates in $1988$, and estimate its value.

c. Find the average rate of change per year during the period $1989$ to $1991$.

d. Estimate the value of $N\left(1994\right)$.