Which represents a function?

Pleas someone help me!!!

Simplify. (-2)^-3 a. -8 b. -1/8 c. 1/8 d. 8

Arestaurant chef made 1 1/2 jars of pasta sauce. each serving of pasta requires 1/2 of a jar of sauce. how many servings of pasta will the chef be able to prepare using the sauce?

    choose the correct definition for  extremo.  a.  end      b.  extra      c.  extract      d.  eventual