Tom and bob start to walk towards each other at 18 feet per minute and 12 feet per minute respectively. in how many minutes will they meet if there was 570 feet between them in the beginning?

19 minutes

Step-by-step explanation:

Tom and Bob start to walk towards each other at 18 feet per minute and 12 feet per minute respectively. Per one minute they together walk

18 + 12 = 30 feet.

Since the distance betwewen them is 570 feet, then it takes them

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