Answer:
A: {(7, 12), (1, -5), (3, -10), (2, -5)}
Step-by-step explanation:
A relation should not have any repeating x values (or domains) in the group of coordinates.
B has 1 as all it's domains. B is not a function.
C lists 0 twice as it's domain. C is not a function
D lists 2 twice as it's domain. D is not a function
A is the best answer because it does not repeat any domains in the coordinates. A is a function.
Equal expressions can be taken equal to an another variable. The system of equations representing the equation is 
<h3>What is logarithm and some of its useful properties?</h3>
When you raise a number with an exponent, there comes a result.
Lets say you get
Then, you can write 'b' in terms of 'a' and 'c' using logarithm as follows
Some properties of logarithm are:
Log with base e = 2.71828... is written as 
simply.
Log with base 10 is written as 
simply.
The given equation is:
Adding 
on both the sides, we get:
The, we get two equations as:
This is the needed system of equations.
Learn more about logarithms here:
brainly.com/question/20835449
Answer:
That x is any number bigger that 5 so 6 plus
Step-by-step explanation:
Answer: $10
Step-by-step explanation:
$4/40 golf balls = $1/10 golf balls
$1/10 = x/100, x=100/10, x=$10
