Answer:
Step-by-step explanation:
Population density is expressed as the ratio of the total number of people, N living in or occupying an area or space to the total area or space. Therefore
Population density = number of people/area
A) The town of Manchester (population 50,000) has the shape of a rectangle that is 5 miles wide and 7 miles long. The area would be
5 × 7 = 35 square miles
Population density = 50000/35
= 1429 people/square mile
B) The business area has radius of 1 mile. Its area would be
πr² = 3.14 × 1² = 3.14 square miles.
The area where people reside outside the business area is
35 - 3.14 = 31.86 square miles
Population density = 50000/31.86
= 1569 people per square mile
14000+7x=35x (x being the number of books) solve for x and you have your answer. 14000=35x-7x=28x therefore x=14000/28=500 so he needs to sell 500 books before he breaks even.
Answer:
D
Step-by-step explanation:
you can just find the value of y and try some number of x
i.e. if x = 0, both of them will be 0
x = 1
G(x) result is -2
F(x) result is 1
x= -1
G(x) result will be 2
F(x) result is -1
so from these we can prove that G(x) is bigger graph than F(x) but flip vertically by y axis
Answer:
(2a + 1)(a + 3) = 2a² + 7a + 3
