(4q) what is the amplitude and period of f(t)= -2cos (3t)

If m 17 27 90 63 ** picture is attached

Tom had a total of $220 and he spent $35 on a basketball ticket . what percent of his money did he have left?

Two students were asked if they liked to read. is this a good example of a statistical question? why or why not? a yes, this is a good statistical question because a variety of answers are given. b yes, this is a good statistical question because there are not a variety of answers that could be given. c no, this is not a good statistical question because there are not a variety of answers that could be given. no, this is not a good statistical question because there are a variety of answers that could be given