Answer
4$y^{2}$+4y+4
Work Step by Step
The phrase "Subtract (-7$y^{2}$+y-4) from (-3$y^{2}$+5y)." can be translated to the expression: (-3$y^{2}$+5y)-(-7$y^{2}$+y-4)
Simplify:
(-3$y^{2}$+5y)-(-7$y^{2}$+y-4)
=-3$y^{2}$+5y+7$y^{2}$-y+4
=-3$y^{2}$+7$y^{2}$+5y-y+4
=4$y^{2}$+4y+4
