When I saw you, I lost my tongue. Can I put yours in my mouth? Dirty-Edition

What is f(3) for the quadratic function f(x)= 2x^2+ + x - 12

In the following diagram it is given that dec, ab || dc, ad || eb, and ad is congruent to bc. a)why isn't abc a parallelogram even though it has a pair of parallel sides and a pair of congruent sides b)explain why be must be congruent to bc. further explain what type of triangle this makes triangle abc and what it tells you about angle 1 and angle 2c) finally why must angle 3 be congruent to angle 1? further, explain why we know that angle 3 is congruent to angle 2

What is the image of c for a 90° counterclockwise rotation about a? (3, 7) (-1, 3) (7, 3)