The domain of the function is x ≤ 6.88
The domain of the function is y ≤ 20
<h3>Domain and Range</h3>
- These are input and output values for which the function exists
Given the function of x expressed as:
y = 3.5x + 2.8
The domain occurs at the point where 3.5x + 2.8 ≤ 20
3.5x ≤ 20 - 2.8
3.5x ≤ 17.2
x ≤ 6.88 - Domain
This given the domain of the function.
The range of the function is the point where y ≤ 20
Learn more on domain and range here: brainly.com/question/2264373
Evaluating a function means to plug the required value, substituting every x occurrence with that value.
So, you have

Answer: the answer would be c
Step-by-step explanation:
So to get this, we multiply 4 1/4 by 1 1/2 because he is 1 1/2 times taller than her. 4 1/4 x 1 1/2 = 6 3/8 feet tall.
Hope this helps!