Which expressions are equivalent to z + (z + 6)

Choose all answers that apply:

(Choice A)

A

(z+z) + (z+6)

(Choice B)

(z+6) + 6

(Choice C)

C

2 (z+3)

What percentage of $2500 is $425?

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What is the y - intercept of the graph of 3x+4y=24

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