Hello!
Your answer is:
x-31 ≥ 66⇒x ≥ 97!
Hopefully this helps! Please correct me if im wrong! :C
3 < 3x+6
-3<3x
-1<x
3x+6<24
3x<18
x<6
-1<x<6 the book is right
1/25 of a minute is 2,4 secs.
1/5 = 2,4s
5/5 = 12 secs
You multiple the area 18 x 12 = 96 sq ft
