How do I get ready for a benchmark test? (I live in Texas)

What is sin 7x/4 ? i need on this urgent trig

What’s -11-33k and factor each expression completely

You need to solve a system of equations. you decide to use the elimination method. which of these is not allowed? 3x - 2y = 7 3x + 4y = 17 equation 1 equation 2