What is the midline equation of the function g(x)= 2 cos (7x+5)+1

Write a corresponding real world problem to represent 2x - 125=400

Jack has a piece of red ribbon that is two times as long as his piece of blue ribbon. he says that he can use two different equation to find out how long his piece of red ribbon is compared to his piece of blue ribbon is. is he correct? explain his reasoning

The pyramid below was dissected by a horizontal plane which shape describes the pyramid horizontal cross section