Plot connect the points to make picture. Please

What is the point of inflection for the function f(x)=2cos4x on the interval (0, pi/2)

Three consecutive integers have a sum of 234. what are the three integers

Aresearch study is done to find the average age of all u.s. factory workers. the researchers asked every factory worker in ohio what their birth year is. this research is an example of a census survey convenience sample simple random sample