She made a mistake in steps 3-4
Stevic's total earnings after delivering 15 papers on Sunday is $180.
Stevic's total earnings after delivering 15 papers on Saturday is $60.
<h3>What is the total earning?</h3>
Multiplication is the mathematical operation that is used to determine the product of two or more numbers. In order to determine the total earnings, multiply earning per newspaper delivered by total earnings.
Total earnings on Sunday= $12 x 15 = $180
Total earnings on Saturday = 4 x 15 = $60
To learn more about multiplication, please check: brainly.com/question/13814687
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You first need to cross multiply to get 8x+8=6x^2-6. Then make the function into 6x^2-8x-14=0 which can be simplified into 3x^2-4x-7=0 by dividing the equation by 2. Then you must split the middle(-4x) to get 3x^2+3x-7x-7=0. This simplifies to 3x(x+1)-7(x+1)=0 and then to (3x-7)(x+1)=0. From here you just solve for each root which you will find are x= -1 and 7/3
M1= -5 , m2 = 5 inorder to get this you move the constant to the right take the root of both sides separate the solutions and you should get m1= -5, m2 =5
