Pick more then one below each 1-3 help me out please 1.
A. (2x - 1)(x+9)
B. (2x - 1 (x-9)
C. x+7
D.3x(x-9)

2.
A.3x(x+7)
B.3x(2x+1)
C. x-7
D. x+7

3.
A.-0.5
B.-7
C.0.5
D.9
E. 0​

Pick the expression that matches this description: a polynomial of the 5th degree with a leading coefficient of 7 and a constant term of 6 (choice a) 7x^5+2x^2+6 (choice b) 7x^6−6x^4+5 (choice c) 6x^7−x^5+5 (choice d) 6x^5+x^4+7

Use the quadratic formula to solve the equation. if necessary, round to the nearest hundredth. x^2 - 23 = 10x a. -1.93, 11.93 b. 1.93, -11.93 c. 1.93, 11.93 d. -1.93, -11.93

You have a square piece of cardboard that measures 14 inches on each side. to build a box, you cut congruent squares out of each corner of the cardboard. use the picture to find the area of the cardboard you were used to build the box