I've got an equation and I don't even know where to start!

The following table shows the body weight and gestation period of 12 randomly selected mammals.

SPECIES-----------------WEIGHT--------------GESTATION

Elephant------------------6654--------------------645

Cat------------------------3.3----------------------63

Cow-----------------------465---------------------281

Giraffe---------------------529---------------------400

Squirrel--------------------0.101--------------------28

Guinea Pig-----------------1.04---------------------68

Man------------------------62---------------------267

Rabbit-----------------------2.5--------------------31

Raccoon-------------------4.288--------------------63

Red Fox--------------------4.235--------------------52

Monkey----------------------6.8-------------------164

Sheep-----------------------55.5-------------------151

Use weight as the independant variable and gestation as the dependant variable.

What is the linear correlation coefficient? Find the regression equation. Use the regression equation to predict the gestation period of a mammal that weighs 10 kilograms.

I don't even know how to start this one! Please help!