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which is incorrect and why?

a)
a, the student should have used the division property of equality in step 3

b)
a, the student combined like terms incorrectly in step 1

c)
b, the student should have used the addition property of equality in step 2

d)
b, the student should have used the multiplication property of equality in step 2

B) A, the student combined like terms incorrectly in step 1

Step-by-step explanation:

This student added the like-terms instead of deducting like-terms. You do what it gives you.

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so firstly, we need to isolate the y variables to be able to solve these inequalities. firstly, add 0.5x on both sides of the first inequality and subtract 1.5x on both sides of the second inequality:

now since the slope is positive for the first inequality, this means that the line going upwards belongs to the first inequality, and the line going downwards belongs to the second inequality.

next, since y ≥ in the first inequality, this means that the shaded region will be above the first inequality's line, thus shading regions a and b.

next, since y ≤ in the second inequality, this means that the shaded region is going to be below this line, thus shading regions a and c.

since both lines shade region a, this means that region a is the solution.

step-by-step explanation:

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