The population of a region is growing exponentially. there were 30 million people in 1980 (when t=0) and 80 million people in 1990.
(a) find an exponential model, p(t), for the population (in millions of people) at any time t, in years after 1980. note: keep at least 4 decimal places in your answer.
(b) what population do you predict for the year 2000? note: round to one decimal place. predicted population in the year 2000
(c) what is the doubling time? note: round to one decimal place. doubling time =

Danny draws a transversal, t, on two parallel lines ab and cd, as shown below: he makes the following table to prove that the alternate interior angles are equal: which is the missing justification? (6 points) corresponding angles formed by a transversal on parallel lines are supplementary. corresponding angles formed by a transversal on parallel lines are congruent. co-interior angles formed by a transversal on parallel lines are congruent. co-exterior angles formed by a transversal on parallel lines are congruent.

Which expression gives the area of the triangle shown below

Based on the graph, what is the initial value of the linear relationship? a coordinate plane is shown. a line passes through the y-axis at -2 and the x-axis at 3.