1) Lorraine would like to purchase a new pair of boots that cost $80. She has a coupon for 25% off.
The following proportion can be used to help her determine the new price:

A) X represents the new price of the jacket after adding the coupon

B) There's a 100 in the denominator of the first ratio because it was originally a percentage, you multiply the percentage by 100 to figure out the decimal.

C) Cross multiply:

100x-2000

Then subtract 100 by both sides:

(100 cancels out each other) 100x-2000

    2000-100= 1900                                                  

X=1900      

6. float, because the density is less than the density of water

7. sink, because the density is greater than the density of water

Step-by-step explanation: