The birth rate B of multiple births as a function of age a is given by the function B (a) = 1.73a - 14.56 for 15 < or equal to 15 < or equal to 44.

Question

The birth rate is the number of births per 1000 women. A multiple birth rate is any birth with 2 or more children born. A) What are the independent and dependent variables? B)  What is the domain of this linear function? C) What is the multiple birth rate of women who are 22 years old according to the model? D)  Graph the linear function over its domain. E) What is the age of women whose multiple birth rate is 49.45?

Answer 1

The dependent variable is multiple births and the independent one is the age of the woman.

 

B(22) = 1.73(22) - 14.56

 

=  38.06 -14.56 

 

=  23.5 years

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

+