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

80) f(x) = -(x + 2) 4 x
10
y
80)
5
-10 -5 5 10
x
-5
-10
Find the equation that the given graph represents.
81)
81)
A) P(x) = -x 6 + 20x 4 - 100x 2 + 100 B) P(x) = -x 6 + 10x 4 - 100x 2 - 100
C) P(x) = x 5 - 10x 4 - 100x 2 + 100 D) P(x) = -x 5 - 20x 4 - 100x 2 + 100x
Find all complex zeros of the polynomial function. Give exact values. List multiple zeros as necessary.
82) f(x) = x 4 - 21x 2 - 100 82)
Find a polynomial of lowest degree with only real coefficients and having the given zeros.
83) 8, -14, and 3 + 8i 83)
Solve the problem.
84) Find the required annual interest rate, to the nearest tenth of a percent, for $168 to grow
to $547 if interest is compounded weekly for 10 years. Assume exactly 52 weeks per
year.
84)
10