Find the missing number, if possible. There may be more than one number that works, so find as many as possible. If no number works, write "No number possible."
= 21
A. 
B. 21
C. -21
D. -21, 21
Answer: D
Mathematics
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At the given point, find the slope of the curve, the line that is tangent to the curve, or the line that is normal to the curve, as requested.4x2y - ? cos y = 5?, slope at (1, ?)
A. - 
B. -2?
C. 0
D. ?
Mathematics
Factor completely. If the polynomial cannot be factored, say it is prime.8x4 - x
A. x(2x - 1)(4x2 + 1) B. x(2x - 1)(4x2 + 2x + 1) C. x(2x + 1)(4x2 - 2x + 1) D. x(8x - 1)(x2 + 2x + 1)
Mathematics
Graph the equation by plotting points.y = - 
x - 9
A. 
B. 
C. 
D. 
Mathematics
Use the indicated property to provide a new expression equal to the given expression. Simplify, if possible.z + 0; identity
A. 0 + z B. z C. 0 D. 1
Mathematics