Find the product.(x - 7)(x + 7)
A. x2 - 49
B. x2 + 14x - 49
C. x2 - 14x - 49
D. x2 - 14
Answer: A
Mathematics
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Evaluate -(-x) for the given value of x.x = -72
A. 72
B. -72
C. 0
D. - 
Mathematics
Solve for the specified letter.A = bh, for b
A. b = Ab
B. b = 
C. b = A - b
D. b = 
Mathematics
Solve the problem.Find the producers' surplus if the supply function of some item is given by S(q) = q2 + 2q + 8. Assume supply and demand are in equilibrium at q = 30.
A. 18,900 B. 17,200 C. 12,700 D. 19,800
Mathematics
Solve the equation. Express radicals in simplest form.(r + 6)2 = 11
A. {-6 + 
, -6 - 
}
B. {6 + 
, 6 - 
}
C. {5}
D. {
, 
}
Mathematics