What is the result of subtracting the second equation from the first? \begin{aligned} -2x+y &= 0 -7x+3y &= 2 \end{aligned}
−2x+y
−7x+3y


=0
=2

Estimate the product. round the first factor to the nearest whole number, round the second factor to the nearest ten, and then multiply. 3 8/9 × 96

Which is a true statement about an exterior angle of a triangle a. it is formed by two segments that are not sides of the triangle, b. it forms a linear pair with one of the interior angles of the triangle, c. it is complementary to one of the interior angles of the triangle. d. it is formed by two segments that are sides of the triangle.

If f(x)=3x+1 and f^-1=x-1/3, then f^-1(7)=