The teenage birthrate in Country A has declined since 1994. Letf(t)be the birthrate(numberof births per 1000
women ages15-19)at t years since 1990.
a. What is the equation of f?
nothing(Useintegers or decimals for any numbers in the expression. Round to the nearest hundredth asneeded.)
b. Use the model to predict the birthrate in 2015.
The model predicts that the birthrate will be
births per 1000 women ages 15-19.
(Roundto the nearest tenth asneeded.)
Assuming that there will be
10 comma 450
teenage women in CountryA,use the predicted birthrate to estimate the number of births to women ages15-19in 2015.
The model predicts that there will be
births to teenage mothers in 2015.
(Roundto the nearest whole number asneeded.)
c. According to themodel,after what year will the birthrate will be less than
births per 1000 women ages15-19?
(Roundup to the nearestyear.)