7th Grade Math

Problem Solving in Animal Conservation Problem Solving in Animal Conservation 6363

The fork length of a shark is the length from the tip of the snout to

the fork of the tail. Use the information on the note cards to solve

each problem.

1. Write an expression to represent the total length of a hammerhead shark that
   has a fork length of f feet.


2. Use the expression from Exercise 1 to find the total length of a hammerhead
   shark that has a fork length of 11.6 feet.


3. Write an expression to represent the average fork length of a tiger shark, given
   the average fork length s of a sandbar shark.


4. Use the expression from Exercise 3 to find the average fork length of a tiger
   shark if the average fork length of a sandbar shark is 129 centimeters.


5. About how much would a white shark with a fork length of 13.8 feet weigh?


6. The largest white shark in a recent study had a fork length of 16.2 feet. How
   much more did this shark weigh than the shark described in Exercise 5?

Tiger Shark

A study found that the average

fork length of a tiger shark is

55 centimeters less than twice

the average fork length of a

sandbar shark.

Hammerhead Shark

The total length of a

hammerhead shark is

about 1.3 times the fork length.

White Shark

The weight in pounds of a

white shark can be estimated

using the expression

18 x^2 - 134 x + 304,

where x is the fork length

in feet.

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