Means the number you can use
remember we can't divide by zero
domain is x^2-9
set to zero to find values we can't use
x^2-9=0
x^2=9
x=+/-3
domain=all real numbers except -3 and 3
Answer:
The answer is <u><em>c</em></u> :D brainliest pls
Answer:
-5,4
Step-by-step explanation:
Answer:
-20 https://www.google.com/url?sa=i&source=images&cd=&ved=2ahUKEwjt5uy29dzfAhWMZd8KHfEOA10QjRx6BAgBEAU&url=https%3A%2F%2Fbobsandcrowlakes.ca%2Finterpret-lake-levels%2F&psig=AOvVaw3OuFLGof8RcGzqUWZobVz0&ust=1546993334080397
