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Verified Answer :

Y = 15 • 3x
Y = 15 • 3(-3)
Y = 15 • (-9)
Y = -135

Answer: Yes

Step-by-step explanation:

Hi, to answer this question we have to substitute x =-3 on the function given, and solve for the variable y.

y = 15 • 3x

Replacing the value of the variable x by -3:

y = 15 • 3(-3)

Multiplying

y = 15 .-9

y = -135

It is correct, the answer is y= -135  

Feel free to ask for more if needed or if you did not understand something.

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