Answer:
x=7
Step-by-step explanation:
Find slope first



m is undefined- so it is a vertical line
x=7
 
        
             
        
        
        
Answer:
(a)
(b)
(c)
Step-by-step explanation:
We are required to construct 3 linear equations starting with the given solution z = 1/3.
<u>Equation 1</u>
<u /> <u />
<u />
Multiply both sides by 9

Rewrite 3 as 5-2
9z=5-2
Add 2 to both sides
Our first equation is: 
<u>Equation 2</u>
<u /> <u />
<u />
Multiply both sides by 21

Rewrite 7 as 11-4
21z=11-4
Subtract 11 from both sides
Our second equation is: 
<u>Equation 3</u>
<u /> <u />
<u />
Multiply both sides by 6

Rewrite 6z as 4z+2z
4z+2z=2
Subtract 2z from both sides
Our third equation is: 
 
        
             
        
        
        
Answer:
 $651.8
Step-by-step explanation:
Alice earns $2.65 per hour 
In 42 hours she will earn = 42 * 2.65 = $111.3
Her total tip after 42hours is 540.5
Total money earned is 540.5+111.3 = 651.8
 
        
             
        
        
        
Answer:
100/8 = 12.5 (s)
Step-by-step explanation:
hmm bro