Write a multi-step real-world problem in which the answer can be found by estimating 18% of 30. then explain how you would solve it.

Given abcd ac=38 and ae=3x+4 find the value of x

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Will mark 50 show all what is the solution to the system of equations? use the substitution method and show your work. -5x+y= -3 -15 x+3y=7 explain what your answer in part (a) tells you about the association of the lines in this system.