Answer:
Part A: T(x) = $49.99x + $499.00
Part B: $748.95
Part C: T(x) = $49.99x + $24.99y + $499.00
Part D: $773.93
Step-by-step explanation:
Part A:
Let x represent the amount of games bought. Let T(x) represent total cost.
T(x) = $49.99x + $499.00
Part B:
T(x) = $49.99(5) + $499.00
T(x) = $249.95 + $499.00
T(x) = $748.95
Part C: 
Let y represent the amount of controllers bought.
T(x) = $49.99x + $24.99y + $499.00
Part D:
T(x) = $49.99(4) + $24.99(3) + $499.00
T(x) = $199.96 + $74.97 + $499.00
T(x) = $773.93
 
        
             
        
        
        
40.9267 is the square root
        
                    
             
        
        
        
Answer:
There are 122 one dollar bills, 11 five dollar bills and 5 ten dollar bills.
Step-by-step explanation:
There are bills of one dollar, five dollars and ten dollars on the cash drawer, therefore the sum of all of them multiplied by their respective values must be equal to the total amount of money on the drawer. We will call the number of one dollar bills, five dollar bills and ten dollar bills, respectively "x","y" and "z", therefore we can create the following expression:

We know that there are six more 5 dollar bills than 10 dollar bills and that the number of 1 dollar bills is two more than 24 times the number of 10 dollar bills, therefore:

Applying these values on the first equation, we have:

Applying z to the formulas of y and x, we have:

There are 122 one dollar bills, 11 five dollar bills and 5 ten dollar bills.
 
        
             
        
        
        
They are all correct good job
        
             
        
        
        
Slope-intercept form:
y = mx + b
"m" is the slope, "b" is the y-intercept (the y value when x = 0, or (0,y))

Rise is the number of units you go up(+) or down(-)
Run is the number of units you go to the right
y = -2x
This has a y-intercept of 0, so the line intersects the y-axis/goes through the origin at (0,0)
The slope is -2 or  , so from each point, you go down 2 units, and to the right 1 unit.
, so from each point, you go down 2 units, and to the right 1 unit.