Answer:
- 
Step-by-step explanation:
Given
f(x) =
- 
Evaluate f(19) by substituting x = 19 into f(x)
f(19) =
- 
=
- 
=
- 4
=
-
= - 
Answer:
y=9x+9
Step-by-step explanation:
It depends on what happens to the price of the item during the sale which is not stated in your problem. So if it cost 6 dollars and goes on sale it should be 6 dollars.
Answer:
4 Chickens, 3 Oxen
Step-by-step explanation:
Given:
Known:
- Chickens have 2 legs
- Oxens have 4 legs
Solution:
- 4 Chickens have a total of 8 legs (2 + 2 + 2 + 2)
- 3 Oxen have a total of 12 legs (4 + 4 + 4)
- There are a total of 20 legs in total between the chickens and oxens.