For this case we must raise the equation according to the given statement.
Let the variable "x" be the unknown number.
So, three times the number is: 
If to that term is added "6" we have:

The sum of both terms is "12", then:

Thus, the equation is: 
Answer:

Answer:
8.48528137424^2
Step-by-step explanation:
8.48528137424x8.48528137424
= 72
(x-4)•2 < 9
the difference between x and 4 means to subtract
and twice that means to double or times by 2
and all that’s LESS than 9
so the sign opens up towards the 9
a=1.34
b=ln-10
ln>10
Step-by-step explanation: