PLEASE HELP ME I REALLY NEED HELP In two or more complete sentences describe how to determine if the function, f(x)=3cos(x) is even by looking at a graph.

The number of 8th graders who responded to a poll of 6th grade and 8 th graders was one fourtg of the number of 6th graders whi responded if a total of 100 students responddd to the poll how many of the students responded were 6 th graders

With alll of except for the 2 that i did already

Aquadrilateral has exactly 3 congruent sides davis claims that the figure must be a rectangle why is his claim incorrect.