Well divide the numbers to find the unit rate so it’s 200 meters in a minute I think
        
             
        
        
        
Answer:
240
Step-by-step explanation:
 
        
             
        
        
        
Answer:
B
Step-by-step explanation:
 + 6 = x ( subtract 6 from both sides )
 + 6 = x ( subtract 6 from both sides )
 = x - 6 ( square both sides )
 = x - 6 ( square both sides )
x = (x - 6)² ← expand using FOIL
x = x² - 12x + 36 ( subtract x from both sides )
0 = x² - 13x + 36 , that is
x² - 13x + 36 = 0 ← in standard form
(x - 4)(x - 9) = 0 ← in factored form
Equate each factor to zero and solve for x
x - 4 = 0 ⇒ x = 4
x - 9 = 0 ⇒ x = 9
As a check
Substitute these values into the equation and if both sides are equal then they are the solutions.
x = 4
left side =  + 6 = 2 + 6 = 8
 + 6 = 2 + 6 = 8
right side = x = 4
Since 8 ≠ 4 then x = 4 is an extraneous solution
x = 9
left side =  + 6 = 3 + 6 = 9
 + 6 = 3 + 6 = 9
right side = x = 9
Thus the solution is x = 9 → B
 
        
             
        
        
        
1st equation—x, substitute y: 
<span>3x + 2(x + 3) = 16 </span>
<span>3x + 2x + 6 = 16 </span>
<span>5x = 10 </span>
<span>x = 2 </span>
<span>y in the above equation: </span>
<span>= 2 + 3 </span>
<span>= 5 </span>
<span>Answer: x = 2, y = 5</span>