Question

Algebra 1 Word Problems



During the period 1985-2012, the projected enrollment B (in thousands of students) in public schools and the projected enrollment R in (in thousands of students) in private schools can be modeled by
B = -18.53t^2 + 975.8t + 48,140
and
R = 80.8t + 8,049

where t is the number of years.

A: Write an equation that models the difference in the projected enrollments for public schools and private schools as a function of the number of years since 1985

B: Find the difference in projected enrollments for public schools and private schools in 2005.

Answer 1

For part A, calculate the difference between the two functions B-R and simplify.
For part B, in the function B-R replace t with 2005 and calculate.

Answer 2

Need help?