The first one is C and the second one is B
(-3, 3) because it is the intersection point.
The equation that represents x when solved is 
Given the equation that expresses the weight of a chimpanzee with respect to the months of birth as:
y = 1.5x + 8
We are to express x in terms of "y"

Subtract 8 from both sides

Divide both sides by 1.5

Hence the equation that represents x when solved is 
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Multiply the one by the 2 and the three by the 2. Put the decimal back in and add the negative sign