Final answer:
To find the weight increase per foot of growth in fork length for a great white shark, we divide the given equation by 5, resulting in a weight increase of 450 pounds per foot of growth.
Step-by-step explanation:
The equation given is 5w = 3,150 + 450l, where w represents the weight of a great white shark in pounds and l represents the shark's fork length in feet.
To find the estimated weight increase per foot of growth in fork length, we need to isolate the variable w by dividing both sides of the equation by 5, resulting in w = 630 + 90l.
The coefficient of l in this simplified equation, 90, represents the weight increase in pounds for each additional foot of fork length.
Therefore, the answer is D) 450 pounds, as each foot of growth in fork length increases the weight by 450 pounds.