A: Function f.
Step-by-step explanation:
Let's find the maximum y-value of each function.
Function f ย is given by:
Remember that the value of cosine is always between -1 and 1. In other words:
Then assuming the greatest value for cosine, we can substitute it for one:
Function g is given by the graph.
Looking at the graph, we can see that the maximum y-value of g is 3.
Finally, function h is given by the table.
Looking at the table, the maximum y-value of h is -2.
Therefore, function f has the greatest maximum y-value.