Simplest way to do this:
number of books= 120
percentage represented by 120= 100%
increase current percent by 55%= 155%
: . 55% increase = original number of books * (155%)
= 120 * (155/100)
= 186
Answer:

Step-by-step explanation:
we know that

therefore
The expression in the form
is equal to

where
k=16
n=2
16--(3) $17
17--(3) $64
18--(2) $18
sorry i don't know this one wish i could help
Answer:
-x+2
Step-by-step explanation:
3x+(2−4x)
=3x+2-4x
=3x-4x+2
=-x+2
I hope this helps!