Answer:
Step-by-step explanation:
The domain of a function is all of the values that 
can be under that specific function. In this case, we're asking what values of allow 
to exist.
In order for square roots to exist, the quantity under the square root must be greater than or equal to 
, because you can't take the square root of a negative number. Therefore, we can write the following inequality to solve for :
Solving this inequality, we get:
(Subtract 
from both sides of the inequality to isolate )
(Multiply both sides of the inequality by 
to get rid of 's coefficient)
Hope this helps!
Answer:
y intercept is 420
Step-by-step explanation:
<em>f(-4) = 13</em>
- <em>Step-by-step explanation:</em>
<em>Hi there ! </em>
<em>f(x) = 0.5x + 15</em>
<em>replace x = - 4</em>
<em>f(-4) = 0.5×(-4) + 15</em>
<em>= - 2 + 15</em>
<em>= 15 - 2</em>
<em>= 13</em>
<em>Good luck !</em>
Answer:
Yes
Step-by-step explanation:
The definition of a rational number is a number that can be represented as a fraction. Since 56/7 is a fraction it must be a rational number. An irrational number is a number that cannot be represented as a fraction because it never ends and repeats without a pattern forever. An example of this is pi because pi can never exactly be represented as a fraction.
