For this case we have to:
x: Let the variable representing the number of people to travel in the group
y: Let the variable representing the number of miles traveled.
If friends only have $22 then we have the following inequality:

Now, if there are three people in the group we have that 

The taxi can travel a maximum of 19.33 miles.
On the other hand, if the group wants to travel 10 miles then we have to y = 10.

Thus, they could travel a maximum of 5 people.
ANswer:

Traveling 3 people, the taxi can travel a maximum of 19.33 miles
Traveling 10 miles, a maximum of 5 people can travel
 
        
             
        
        
        
Answer: 
(4x + 12 ) - ( -8 ) =
4x + 20 
Explanation: 
Just add them up and form a equation ( this is for the second one )
        
                    
             
        
        
        
Answer:
   domain of f(x) is x ≤ 0; domain of f^-1(x) is x ≥ 4
Step-by-step explanation:
The square root function will always give a positive value, so the opposite of the square root function will give non-≤positive values. That means ...
- the domain of f(x) is restricted to non-positive values
- the domain of the inverse function is restricted to values of x that make the root be of a non-negative number: x ≥ 4
The domain of f(x) is x ≤ 0; the domain of f^-1(x) is x ≥ 4.
 
        
             
        
        
        
Answer:
(-2, -8)
x = -2
y = -8
General Formulas and Concepts:
<u>Pre-Algebra</u>
- Order of Operations: BPEMDAS
- Equality Properties
<u>Algebra I</u>
- Solving systems of equations using substitution/elimination
Step-by-step explanation:
<u>Step 1: Define systems</u>
13x - 6y = 22
x = y + 6
<u>Step 2: Solve for </u><em><u>y</u></em>
<em>Substitution</em>
- Substitute in <em>x</em>:                              13(y + 6) - 6y = 22
- Distribute 13:                                 13y + 78 - 6y = 22
- Combine like terms:                      7y + 78 = 22
- Isolate <em>y</em> term:                                7y = -56
- Isolate <em>y</em>:                                         y = -8
<u>Step 3: Solve for </u><em><u>x</u></em>
- Define original equation:                    x = y + 6
- Substitute in <em>y</em>:                                     x = -8 + 6
- Add:                                                      x = -2