What is the greatest common factor of 12a and 9a2?
a.9
b.36
c.3a
d.12a2

3a is the greatest common factor of the 12a and 9a² .

Option (C) is correct.

Step-by-step explanation:

Definition of greatest common factor

The greatest common factor is of two numbers is the number that is a factor of both of the numbers.

As given

As the number given in the question are 12a and 9a² .

Factors of 12a = 3a × 4

Factors of 9a² =  3a × 3a

Thus the common factor of the 12a and 9a² is 3a .

Thus 3a is the greatest common factor of the 12a and 9a² .

Option (C) is correct.

the correct answer is you spend $55.78 more in a brand store that buy ing in a normal store.

step-by-step explanation:

brand = spend   $ 135.85 total

store = spend $80.07 total