Step-by-step explanation:
megan owes the bank 14 dollars, but she then deposits 6 dollars. she now owes the bank 8 dollars
Similar polygons only differ by a scaling factor. In other words, two polygons are similar if one is the scaled version of the other.
In particular, this implies that the angles are preserved, and the correspondent sides are in proportion.
These two polygons are both rectangles, so the angles are preserved. We must check the sides, and we have to check if the smaller sides are in the same proportion as the bigger sides.
So, the two rectangles are similar if the following is true.

In any proportion, the product of the inner terms must be the same as the product of the outer terms:

This is clearly false, and thus the two rectangles are not similar.
Mrs. Smith donated $20
The constant proportionality is $1 because no matter what, Mrs. smith will donate $1 for each mile. So if Sam were to only walk 1 mile, mrs. smith would donate $1. Or seen as a 1:1 proportion.
Answer:
Step-by-step explanation:
Start by changing the dollars into cents.
2.07 dollars = 2.07 * 100 = 207 cents
1.64 dollars = 1.64 * 100 = 164 cents.
How much does 1 ounce cost for each?
207 cents / 48 = 4.3125 cents / oz
164 / 32 = 5.125
The better buy is the 48 fluid oz jar.