Key to the Practice Midterm

Problem 1

(-1,5)

Problem 2

2^2/3 or 3^2/3  

Problem 3

{x|x not -1, x not14}

Problem 4

Let the domain be the set of all  car owners and the range be the set of all cars.  Then the relation that assigns each car owner to thier car(s) is a relation but not a function since some people own more than one car.

Problem 5

A.  4x² + 2x

B.  2x + 1 + h

C.  3

D.  -3

E.  3x² - 3x + 3

Problem 6

Tho ladder is 100/12 = 8.33 feet tall.

Problem 7

Vertex:  (2,-1)

y-int:  (0,3)

x-int:  (1,0) and (3,0)