The x-coordinates of a point that lies on the y-axis is positive. is this sometimes, never, or always true?

This is never true.

the x-coordinates of a point that lies on the y-axis is 0.

10% of increase is the final answer! : )

the entire expression should be subtracted from 30. to subtract the quantity, distribute the negative sign, which changes the signs on the terms. so, the –2 changes to positive and gets added to 30 instead of subtracted from it.

hope this ! ^w^