To find the answer all you do is switch the percentage to a decimal and multiply by the number you were given. For example on 1a, 19% as a decimal is 0.19 and 0.19 * 360 is 68.4. All of 1 and 2 questions work this way. For number three, take the fraction and convert it to a decimal (so 1/2 will be 0.5, 1/3 will be 0.33, etc) and add that to the whole number. For example, 3a would be 33.33%. 3b would be 12.5%.
A: a horizontal shrink would be caused by cos 3x. B: a vertical stretch would be caused by 3 cos x C: a horizontal stretch would be caused by cos (1/3)x D: a vertical shrink would be caused by 1/3 cos x.
