Trigonometry: simplify. tan x sin 2x

Given f(x)= 9x+1 and g(x)=x^3, choose the expression (f*g)(x)

Which one ? is the answer and how to find this answer

The frequency table shows the results of a survey asking people how many hours they spend online per week. on a piece of paper, draw a histogram to represent the data. then determine which answer choice matches the histogram you drew. in order here is the.. hours online: 0-3, 4-7, 8-11, 12-15, and 16-19. frequency: 5, 8, 10, 8, 7 answer for the question is in the picture! : )