A rock is thrown from one side of a river to another. The function h(t) = −16t2 + 80t + 30 gives the height in inches of the rock t seconds after it has been thrown.
What is a reasonable domain given the context of this problem?
a. a reasonable domain is all integers
b. a reasonable domain is all positive rational numbers
c. a reasonable domain is all positive irrational numbers
b. a reasonable domain is all positive rational numbers
In the context of this problem, the domain should include all possible values of time (t) after the rock has been thrown. Since time cannot be negative and must be rational (since we are dealing with seconds), a reasonable domain would be all positive rational numbers.