Asap! and give the step-by-step answer! given the system of linear equations. x=y+3 y=-4x-3part a: solve the linear system of equations by graphing part b: use substitution to solve the linear system of equations part c: use addition to solve the linear system of equations in your final answer, include all of your work, the graph of the equations and the solution.

The final cost of a sale is determined by multiplying the price on the tag by 75%. which best describes the function that represents the situation?

What is the equation of the line in point-slope form? y+ 4 = 1/2(x+4) y-4 = 1/2(x + 4) y-0 = 2(x - 4) y-4 = 2(8-0)

Quick! a survey of 57 customers was taken at a bookstore regarding the types of books purchased. the survey found that 33 customers purchased mysteries, 25 purchased science fiction, 18 purchased romance novels, 12 purchased mysteries and science fiction, 9 purchased mysteries and romance novels, 6 purchased science fiction and romance novels, and 2 purchased all three types of books. a) how many of the customers surveyed purchased only mysteries? b) how many purchased mysteries and science fiction, but not romance novels? c) how many purchased mysteries or science fiction? d) how many purchased mysteries or science fiction, but not romance novels? e) how many purchased exactly two types of books?