Answer:
56 hours
Step-by-step explanation:
we know that  
A relationship between two variables, x, and y, represent a proportional variation if it can be expressed in the form  or
 or  
Let
x -----> the number of hours
y ----> the amount earned in dollars
This problem represent a proportional relationship between the variable x and the variable y
Find the value of the constant of proportionality k
 
 
For (3,27) ---->  
 
For (9,81) ---->  
 
For (21,189) ---->  
 
The constant of proportionality k is 9
The linear equation is
  
For y=$500
substitute in the equation and solve for x
  
Divide by 9 both sides
  
 
        
             
        
        
        
Answer:
178
Step-by-step explanation:
1246 over a week, (1246/7) in a day. 178 rocks a day 
 
        
             
        
        
        
Answer: 30.8%
Step-by-step explanation:
Given
Total students receiving financial aid are 6101
Students who are graduate and receiving financial aid are 1879
Probability is the ratio of the favorable and total outcomes
So, the probability is  given by 
 
 
 
        
                    
             
        
        
        
Answer:
y = - 3x + 4
Step-by-step explanation:
Line is passing through the points (1, 1) & (0, 4)
Slope of line = (4-1)/(0-1) = 3/(-1) = - 3
Equation of line 
y = mx + b 
Here m = - 3, b = 4
y = - 3x + 4
Using point (1, 1)
y - 1= - 3(x - 1)
y = - 3x +3 +1
y = - 3x + 4
 
        
             
        
        
        
Chris started with $70  in the savings account 
What is the equation representing the scenario?
The equation representing the scenario painted in the question is: one half times x plus 15 equals 50
1/2*X+15=50
X/2+15=50
X/2=50-15
X/2=35
X=35*2
X=70
In short the amount Chris started with in the savings account is $70
Find out more about savings plan equation on:brainly.com/question/23630456
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