Answer:
$1.20 Increase
Step-by-step explanation:
18.60/15.5
Let's assume that the statement "if n^2 is odd, then is odd" is false. That would mean "n^2 is odd" leads to "n is even"
Suppose n is even. That means n = 2k where k is any integer.
Square both sides
n = 2k
n^2 = (2k)^2
n^2 = 4k^2
n^2 = 2*(2k^2)
The expression 2(2k^2) is in the form 2m where m is an integer (m = 2k^2) which shows us that n^2 is also even.
So this contradicts the initial statement which forces n to be odd.
Breaking apart 6x6 is useless. It's already broken apart. The breaking apart method is used to multiply larger numbers, in your head. Like 160 x 4

Break apart the larger number into a set of addends that sums up to 160. 100 and 60 are addends.

Multiply both numbers by the multiplier ( 4 )

(You can even break down the 60 into something smaller)

Add up both of the products to get your final answer.