Answer:
1st and 3rd are functions, 2nd and 4th are not functions
Step-by-step explanation:
Let the variable for total cost be c and person be p
c = 5x + 5x
Solution:
<u>Given:</u>
<u>Solve the equation by isolating the variable.</u>
- => 18 = 2b
- => 2b/2 = 18/2
- => b = 9
The value of b is 9.
Hoped this helped!
Answer:
finding the square root of a negative number is not possible