$3x^{2}+12x+7$

$3x^{2}+14x+17$

$3x^{2}+19x+20$

$3x^{2}+26x+33$

$x=1$ and $x=2$

$x=-\frac{1}{2}$ and $x=\frac{3}{2}$

$x=\frac{1+\sqrt{5}}{2}$ and $=\frac{1-\sqrt{5}}{2}$

$x=\frac{-1+\sqrt{5}}{2}$ and $x=\frac{-1-\sqrt{5}}{2}$

$3x-2$

$3x+2$

$3x-8$

$3x+8$

$\frac{x-7}{5}$

$\frac{8x-3}{2}$

$\frac{8x^{2}-3x-14}{2x-14}$

$\frac{8x^{2}-3x-77}{2x-14}$

16

40

81

130

1

2

4

8

$(0,14)$

$(0,2)$

$(0,22)$

$(0,-8)$

8

10

20

40

The minimum estimated number of advertisements the company sent to its clients during the 5 years was 1,708.

The minimum estimated number of advertisements the company sent to its clients during the 5 years was 9,000.

The estimated number of advertisements the company sent to its clients in 1997 was 1,708.

The estimated number of advertisements the company sent to its clients in 1997 was 9,000.

$w=4(9^{n})$

$w=4(9^{n-1})$

$w=9(4^{n})$

$w=9(4^{n-1})$

$(1+\sqrt{3},\sqrt{3})$

$(\sqrt{3},-\sqrt{3})$

$(1+\sqrt{5},\sqrt{5})$

$(\sqrt{5},-1+\sqrt{5})$

$(x^{2}+1)(x^{2}-6)$

$(x^{2}+2)(x^{2}-3)$

$(x^{2}+3)(x^{2}-2)$

$(x^{2}+6)(x^{2}-1)$

$4x^{2}+21x+33$

$4x^{2}+21x+29$

$4x^{2}+x+29$

$4x^{2}+x+33$

$n=(1+604)^{t}$

$n=(1+0.004)^{t}$

$n=604(1+0.004)^{t}$

$n=0.004(1+604)^{t}$

18

20

24

40