Which transformations are needed to change the parent cosine function to
y=0.35cos(8(x-pi/4)) ?
THE CORRECT ANSWER IS
C) vertical compression of 0.35, horizontal compression to a period of pi/4, phase shift pi/4 units right

White shapes and black shapes are used in a game. some of the shapes are circles. while the rest are squares. the ratio of the number of white shapes to the number of black shapes is 5: 11. the ratio of the number of white cicrles to the number of white squares is 3: 7. the ratio of the number of black circles to the number of black squres is 3: 8. work out what fraction of all the shapes are circles.