PLEASE HELP QUICK What will the first row of this multiplication be?
4x^3 +0x^2 -3x +4
2x -5
choices:
A. -20x^3+0x^2+15x-20
B. 4x^3+0x2-1x-1
C. 4x^3+0x^2-6x-20
D. -20x^3-5x^2+15x-20

I'm so close to finishing all these.

A. what does the point (4, 122) represent? b. what is the unit rate? c. what is the cost of buying 10 tickets?

Given: lines a and b are parallel and line c is a transversal. prove: 2 is supplementary to 8 what is the missing reason in the proof? statement reason 1. a || b, is a transv 1. given 2. ∠6 ≅ ∠2 2. ? 3. m∠6 = m∠2 3. def. of congruent 4. ∠6 is supp. to ∠8 4. def. of linear pair 5. ∠2 is supp. to ∠8 5. congruent supplements theorem corresponding angles theorem alternate interior angles theorem vertical angles theorem alternate exterior angles theorem