Answer:
Step-by-step explanation:
Data provided in the question:
Initial volume of water = 15 liters
Concentration of salt = 4 liters per minute
x be the amount of salt, in grams, in the fish tank after t minutes have elapsed
The unknown concentration of incoming brine c.
Now,
Salt concentration per minute = 
For x amount of salt = 
Therefore,
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6x-1 = 4x + 6 [ all sides of square are equal]
6x-4x = 6+1
2x = 7
x = 3.5 cm
Answer: $170
Step-by-step explanation:
15% of 200 is equal to $30.
200 - 30 = 170
The answer to the question is 170.
Answer:
C
Step-by-step explanation:
The equation of a line passing through the origin is
y = mx ( m is the slope )
Calculate m using the slope formula
m = 
with (x₁, y₁ ) = (0, 0) and (x₂, y₂ ) = (- 3, 1) ← 2 points on the line
m = 
= - 
y = - x ← equation of line
