1. A function is given by the set of ordered pairs {(-2,1),(-1,6), (0, 11).(1,16),(2,21). Which of the
following best describes the domain of this function?

(1) All real numbers from -2 to 2

(2) All integers from -2 to 2

(3) All real numbers from 1 to 21

(4) All integers from 1 to 21
2.

The chs baseball team was on the field and the batter popped the ball up. the equation b(t)=80t-16•16+3.5 represents the height of the ball above the ground in feet as a function of time in seconds. how long will the catcher have to get in position to catch the ball before it hits the ground? round to the nearest second

What are the excluded values? m+5/mn+3m

What makes a trapezoid an isosceles trapezoid?