Which transformations are needed to change the parent cosine function to the cosine function below?

What is the solution of the systems of equations? y=2/3x+3 x=-2

Bill works as a waiter and is keeping track of the tips he ears daily. about how much does bill have to earn in tips on sunday if he wants to average $22 a day? tips by day tips (dollars) monday tuesday wednesday thursday friday saturday $14 $22 $28 $36

What else equals 42 and 30 for multiply