Answer:
The expression will be simplified into 
Step-by-step explanation:
It's like addition, when you multiply exponents that are on the same bases as each other.
Answer:
$13.75
Step-by-step explanation:
the bill before the tip is x.
0.20x = 2.75
now divide both sides by .20
x= 2.75/0.20
x=13.75
Answer:
I can help!!
Step-by-step explanation:
18 ft bexause the shadow would be 4 feet taller than the actual person