Exam 3 245 practice Disclaimer. The actual test does not mirror this ...

Answer the question.
85) How many positive real zeros does this graph have? 85)
Solve the problem.
86) If x varies inversely as y 2 , and x = 6 when y = 8, find x when y = 4. 86)
87) If f varies jointly as q 2 and h, and f = 144 when q = 4 and h = 3, find q when f = 72 and h =
6.
87)
Determine whether or not the function is one-to-one. Give reason for answer.
88)
y
10
88)
-10 10
x
-10
Find the horizontal asymptote of the given function.
89) h(x) = 16x 2
8x 2 - 3
89)
Solve the problem.
90) If m varies directly as x and y, and m = 24 when x = 6 and y = 9, find m when x = 15 and
y = 8.
90)
Give the domain and range for the rational function. Use interval notation.
91) f(x) = 1
(x - 2)2 + 1 91)
11