Find the remainder when f(x) = 2x3 + 7x2 + 2x − 9 is divided by 2x − 1, and use it to determine if 2x − 1 is a factor.
−6; it is not a factor
−2.25; it is not a factor
3; it is not a factor
0; it is a factor

-6; it's not a factor

Step-by-step explanation:

all is shown in picture

b

step-by-step explanation:

given

- 2 (3x + 12y - 5 - 17x - 16y + 4 )

simplify the parenthesis by collecting like terms

= - 2 (- 14x - 4y - 1) ← distribute the parenthesis by - 2

= 28x + 8y + 2 → b

area of part 1:

a1=base*height/2=(8+2)*(8-2-2-1)/2=10*3/2=15 ft^2

area of part 2:

a2=length*width=(8+2)*1=10 ft2

area of part 3:

a3=length*width=8*2=16 ft2

total shaded area : a1+a2+a3=41 ft2

total area of the reactangle : a=16*8=128 ft2

total area of the nonshaded region : 128-41=87 ft2