Whats 3x3+4 use pemdas ?

Find the value of the cosine for angle a

What is the missing constant term in the perfect square that starts with x^2 -20x

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