Solve the polynomial inequality and graph the solution set on a number line. Express the solution set in interval notation.x < 90 - x2 
A. (-?, 9) ? (10, ?)
B. (-10, 9)
C. (-?, -10) ? (9, ?)
D. (-9, 10)
Answer: B
Mathematics
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Reduce the fraction to simplest form.
A. 
B. 
C. Cannot be simplified
D. 
Mathematics
Use the multiplication principle to solve the equation.8 = - 
a
A. -2 B. 3 C. -32 D. 4
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Use the formula 
to find the average rate of change of the function f(x) on the interval [a, b].f(x) = 7x, [0, 2]
A. 28 B. 24 C. 25 D. 21
Mathematics
Simplify the radical expression by factoring out the largest perfect nth power. Assume that all variables are positive.- 
A. -4xy
B. -4xy
C. 4xy
D. xy
Mathematics