HELP M I POSTED 8 HR AGO AND HAVE NO ANSWER

For f(x)=2x+1 and g(x)= x^2 -7, find (f•g)(x)

Which of the following graphs represents the function f(x) = 2^x

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