(x−2)^2 combind like turns

What number should be added to the expression x^2+3x+ in order to create a perfect square trinomial? 3/2 3 9/4 9

Use the four functions below for this question. compare and contrast these four functions using complete sentences focus on the slope and y- intercept first, and then on any additional properties of each function

Rose bought a new hat when she was on vacation. the following formula describes the percent sales tax rose paid b=t-c/c