If w = -2 and v = -8 which of the following expressions shown the values correctly substituted and for the valuables in the expression w^2 - v + 1
1. -2^2 - (-8) + 1
2. -2^2 - 8 + 1
3. (-2)^2 - (8) + 1
4. (-2)^2 - (-8) + 1

Use the discriminant to describe the roots of each equation. then select the best description. 2m2 + 3 = m double root real and rational roots real and irrational roots non-real roots

Arecipe uses 2 cups of sugar to make 32 brownies. how many cups of sugar are needed to make 72 brownies?

Jack has a piece of red ribbon that is two times as long as his piece of blue ribbon. he says that he can use two different equation to find out how long his piece of red ribbon is compared to his piece of blue ribbon is. is he correct? explain his reasoning