Answer:
y = (C-Ax) /B and x = (C-By)/A
Step-by-step explanation:
y
By = C-Ax
y = (C-Ax)/B
x
Ax = C-By
x = (C-By)/A
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I’m not positive but i think it’s 36x^2 -1
D. Because you're multiplying 3 by a number which is what the variable represents (n), then you're just adding 7 to that which equals 19 all together. It all translates to 3n+7=19.