Answer:
20+10
Step-by-step explanation:
You are subtracting a negative so it becomes like that.
To solve this we are going to use the free distance fallen formula:

where

is the distance

is the gravity of Earth


is the time in seconds
We know from our problem that the
penny fell off the top of the building and hit the sidewalk below 3.1 seconds later, so

. Lets replace the value in our formula:



meters
We can conclude that the penny fell a distance of 47.098 meters
Answer:
D
Step-by-step explanation:
Because n is the number of days and 29.99 is the cost per day.
Also, $50 is the fee so you add that too.
Answer:

I hope this is what you were asking for :)
Answer:
x=−y−3
Step-by-step explanation:
x+y=−3
Step 1: Add -y to both sides.
x+y+−y=−3+−y
x=−y−3