Show the pattern 19.5 18.8 18.1 17.4

To find each number, subtract 0.7 from the previous number.

19.5, 18.8, 18.1, 17.4, 16.7, 16, 15.3, 14.6, 12.9, 12.2, 11.5, ...

Step-by-step explanation:

18.8 - 19.5 = -0.7

18.1 - 18.8 = -0.7

17.4 - 18.1 = -0.7

The difference between consecutive numbers is always the same, -0.7.

To find each number, subtract 0.7 from the previous number.

19.5, 18.8, 18.1, 17.4, 16.7, 16, 15.3, 14.6, 12.9, 12.2, 11.5, ...

f(x) = x^3 -2x^2 -3x

x( x^2 -2x-3)

x( x^2 +x -3x -3)

x( x(x+1) -3(x+1))

x( x-3)( x+1)

so zeroes are 0, 3,-1

its (2) option