If y = 4x, x = 2z, and z = 3a, what is the value of y - x in terms of a? A) -20a B) -18a C) 6a D) 18a E) 20a With steps please

asked Aug 27, 2022 34.5k views

5 votes

If y = 4x, x = 2z, and z = 3a, what is the value of y - x in terms of a?

A) -20a
B) -18a
C) 6a
D) 18a
E) 20a
With steps please

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4 votes

Answer:

D) 18a

Explanation:

y - x

= 4x - x (plug y = 4x)

= 3x

= 3(2z) (plug x = 2z)

= 6z

= 6(3a) (plug z = 3a)

= 18a

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