The physical motion of an object is modeled by the function
s = 21.3t where t is the time (measured in seconds) and s
is the position of this object (measured in meters). Find the time
when s= 213.2 meters. Round your answer to three decimal
points.

What is the effect on the graph of the parent function f(x) = x when f(x) is replaced with 3f(x)? a) shifts the line 3 units up b) shifts the line 3 units down c) increases the slope of the line by a factor of 3 d) decreases the slope of the line by a factor of 3

Determine whether the set of whole numbers is closed under addition. explain why the set is or is not closed. give an example.

1. if events a and b are non-overlapping events, how do you find the probability that one or the other occurs? 2. what does it mean if p(a or b) equals 1?