Which of the following are quadratic functions? Check all that apply. A. y = 2x^2 - 3x + 7
B. y = 3x - 4
C. y = 5x - 3x^2/4 + 1
D. y = x - x^3

Which expression is the factorization of x^2+10+21

Match the following reasons with the statements given to create the proof. 1. do = ob, ao = oc sas 2. doc = aob given 3. triangle cod congruent to triangle aob vertical angles are equal. 4. 1 = 2, ab = dc if two sides = and ||, then a parallelogram. 5. ab||dc if alternate interior angles =, then lines parallel. 6. abcd is a parallelogram cpcte

Libby built a fence that was 56 \text { feet}56 feet long over 44 days. she built the same length of fence each day. how many inches of fence did libby build each day?