You can reverse the problem, and instead of dividing, you can use multiplication.
The 'perfect square' method is basically saying that see if the number inside the square root is a factor of a perfect square (4, 9, 16, 25, etc). But, square root of 22 is not a factor of one of these, so you just have to approximate this. We known that square root of 25 is 5, and 16 is 4. This has to be between 4 and 5 and a little bit more to the 5 side. So, we can approximately say that:
Hope this helps!
You would do 3.5 * 16 = $56
Your answer is A. $56
Hope I helped :)
Answer:
13
Step-by-step explanation:
Divide 12 by 3 first because of (PEMDAS) you get 4 tge add that to the 9 the you get 13.
P = parentheses
E = exponent
M = multiplication
D = division
A = addition
S = subtraction