Equations 1. Select all that are polynomials. A 49x2 - 64 B- 7xy + 2 45y2 + y-y3+8+x3 D-16 E 3x 2 + 6 x 2 2. Complete the statement. [ A 15 + 3x + 5x2 (B 3x + 5x2 + 15 @ 5x2 + 3x + 15 ] is written in standard form. 3. What is the perimeter of this figure? 3x - 1 x2 - 3x x+ 2 3x2 - 11x Perimeter = x2+ x+ 4. Find (3 - 4x - 9x2) - (-8x2 + 7). Ax2 - 4x - 4 B -x2 - 4x -4 C-17x2 - 4x + 10 D -11x2 + 3x -9x2 5 . TRAVEL Stacy flew an airplane for 2 hours at x miles per hour, and then she flew another 3 hours at (x + 25) miles per hour. The entire distance she flew was 1000 miles. Stacy flew at a rate of [ A) 195 B 185 @ 154.2 ] miles per hour for 2 hours and [ A 160 B) 194.4 @ 210 ] miles per hour for 3 hours. 6. Match each expression to its simplified form. a. x(x - 4) A -4x(x - 1) B -12x2 + 8x - 20 b. 4x (x + 1) C -4(3x2 + 2x- 5) C. -4(3x2 - 2x + 5) D X2 - 4x E 4x2 + 4x