MATH 1306 – Homework Handout # 1

Answers To Odd-numbered Problems

1a.       i) y = 10

            ii) x = 2

1b.       i) y = –15

            ii) x = –5, x = 3

1c.       i) y = 11

            ii) none

1d.       i) y = 0

            ii) x = –4, x = 0

1e.       i) y = 0

            ii) x = –2, x = 0, x = 2

1f.        i) y = 0

            ii) x = 0, x = 1

1g.       i) y = 6

            ii) x = –1, x = 3, x = 3

3a.       All real numbers between –2 and 2.5, inclusive

3b.       x = –2, x = 1, x = 2

3c.       y = 4

5a.       All real numbers between 9.5 and 16, inclusive

            The daily hours of operation for the NASDAQ are 9:30 am to 4 pm.

5b.       No

5c.       I(16) stands for the closing value of the NASDAQ (at 4 pm) on a recent trading

            day.

5d.       I(14) = 1846

5e.       I(9.5) = 1650

5f.        t , I

5g.       hours , points

7a.       All real numbers between 6 and 20, inclusive

7b.       C(13) stands for the number of cars in thousands traveling on the Expressway at 1

            pm.

7c.       C(20) = 6

7d.       C(8) = 10

7e.       t , C

7f.        hours , thousands of cars