Answer:
price elasticity of demand = - 1.286
so as decrease price from $200 to $160 quantity sale increase
so total revenue increase
Explanation:
given data
bookstore prices 1= $200 each
sells quantity 1 = 120 books per month
lowers price 2 = $160
sales increase quantity 2 = 160 books per month
to find out
price elasticity of demand
solution
we get here price elasticity of demand that is express as
price elasticity of demand =
.................1
put here value we get
price elasticity of demand = 
solve it we get
price elasticity of demand = - 1.286
so as decrease price from $200 to $160 quantity sale increase
so total revenue increase
Mental Illness ( suicide attempt or trying to kill others, depression )
HIV ( can be too easily spread through blood contact and sharing drug needles)
I could think of only two.
The correct answer is D. to attract female bowerbirds who likely choose males with the best decorated nest.
Bowerbirds are known for building nests or "bowers" and the males use their building skills to attract female bowerbirds. They build elaborate structures with twigs before decorating them with objects.