No it is not. The factors of 81 are 1,3,9,27...
Answer:
- Domain:

- Range:
![(-\infty, -1]](https://tex.z-dn.net/?f=%28-%5Cinfty%2C%20-1%5D)
Step-by-step explanation:
The domain is the set of x-values and the range is the set of y-values.
$6.79 - $3.95 = $2.84. Since you’re rounding to the nearest half dollar, you’d found to $3. $2.84 is closer to $3 than $2.50
$3 - $2.84 = $.16
$2.84 - $2.5 = $.34
Answer: Let the numbers be x and y.
x+y = 20 …(1)
x-y = 10 …(2)
Add (1) and (2)
2x = 30, or x = 15, and so y = 5.
The product of the two numbers = xy = 15*5 = 75.
Step-by-step explanation: