Math 131 Week in review 1
1. Classify each function as a power function, a polynomial, a rational function, or an exponential
function and find f(a) for the given a.
a ) f ( x )  5 (3 )
a2
c) g ( x)  6 3 x
a  8
x
b) f ( x)  4 x
d ) h( x) 
e ) K ( x )  18 x  24 x  32
3
5
a2
3x  5
x  9x  4
2
a 1
a  2
2. What are the domain and range of a function?
Find the domain and range of each function.
a)
f ( x) 
x2
d)
g ( x) 
x
x  3x  4
2
b)
f ( x) 
x 1
2
c)
f ( x) 
x 1
2