Answer:459.27
Step-by-step explanation:
Answer:
Step-by-step explanation:
The initial value of the graph is where
. Thus, in this case, the initial value is 12.
The rate of change of the graph is essentially the slope of the graph. In this case, we can use the slope formula:

and
are points on the graph
Let's use two points from the chart to find the slope:

In this case, the rate of change of the graph is 9.
Note that mailing address is unique, but houses are not, meaning that you can't have house A and house B both referencing the same address.
So, in order to have a valid function, any two points on the function cannot have the same x value that lands on different y.
With this property mentioned, it's clear to see that
(house, address) is NOT a function; however, (address, house) is a function, since same x lands on multiple y values is a valid onto function. (a house that have multiple addresses)
Answer:
∴73,563 calls are made between two cities with populations of 100,000 and 160,000 that are 435 miles apart.
Step-by-step explanation:
Given that,
The number of phone calls between two cities (N )
- directly proportional as the value of populations
and
of two cities. - Inversely varies as the magnitude of distance (d).


Given that,
N=18,000, d=310 miles,
=15,500 and
=180,000



Now,
N=? , d=435 miles,
=100,500 and
=160,000


∴73,563 calls are made between two cities with populations of 100,000 and 160,000 that are 435 miles apart.