## Math 1150: Precalculus, Instructor: Dana Ernst

### Solutions to Review for Midterm Exam  #1

Here are the solutions to the review.

1.     (a) See book

(b)  See book.

1. (a) See book

(b)

3.      is the set of all points that are within r units of the origin.  This is the interval .

4.     (a)

(b)

(c)

(d)  See book

(e)

(f)

5.     See book

6.      units

7.     See book.

8.     See book

9.

10.

11.

12.

13.

14.  Draw anything that doesnâ€™t pass vertical line test.

15.  Solving for y, we get two functions: .

16.  Any equation that has  in it will do.  There are many correct answers.

17.  See book

18.  See book

19.

20.   and

21.

22.  See book

23.

24.  See book

25.  See book

26.  See book

27.  (a) odd

(b)  even

(c)   neither

28.  (a) Down 20

(b)  Right 5

(c)   Right 3, Up 1, Squish by

(d)  Reflect down, Left 9, Down 2

29.

30.

31.

32.

33.

34.

35.  There are a few correct answers, but here is one possibility: , .

36.  See book

37.  See book

38.  (a)

(b)