MAT/117 MAT117 MAT 117 WEEK 7 QUIZ
1.
Which of the following conclusions is true about the statement below?
2 x ⢠=   x
•
The statement is never true.
•
The statement is true when x is negative.
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The statement is always true.
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The statement is true when x=0.
2.
Solve for xx in the equation x2 - 8x - 9 = 0.
•
{-1, -9}
•
{1, -9}
•
{-1, 9}
•
{1, 9}
3.
Select the approximate values of x that are solutions to f(x) = 0, where
f(x) = -9x2 + 6x + 3.
•
{-3.00, 2.00}
•
{-9, 6}
•
{-0.67, -0.33}
•
{-0.33, 1.00}
4.
Select the approximate values of x that are solutions to f(x) = 0, where
f(x) = -7x2 + 3x + 7.
•
{1.24, -0.81}
•
{-7, 3}
•
{-0.43, -1.00}
•
{-1.00, 0.43}
5.
Select the approximate values of x that are solutions to f(x) = 0, where
f(x) = -3x2 + 2x + 2.
•
{-0.55, 1.22}
•
{-3, 2}
•
{-0.67, -0.67}
•
{-1.50, 1.00}
6.
Solve for x in the equation x2 - 12x + 32 = 0.
•
{4, 8}
•
{-4, 8}
•
{4, -8}
•
{-4, -8}
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