McGraw Hill Glencoe Algebra 1, 2012
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McGraw Hill Glencoe Algebra 1, 2012 View details
1. Adding and Subtracting Polynomials
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Exercise 19 Page 468

a We need to work with the equations related to the number of students who drive or fly to their destinations for spring break. We are given equations for the total number of students, and those who flew Let's write a model for finding the number of students who drive,
With that model in mind, we can substitute the given expressions and simplify the polynomial.
The equation model for the number of students who drove to their destination is
b For this part, we will use our solution from Part A to determine the number of students who drove in First, we need to find how many years are between and We can do this by subtracting.
Now, we can substitute into our model for the number of drivers.
The number of drivers the model predicts for is
c For this part of the exercise, we will treat it similarly to how we solved Part B, but instead use the equation for the total number of students. First, let's find out how many years are between and
Now, let's substitute into the equation for the total number of students.
We can conclude that students will drive or fly to their destinations in