Find the curvature of the curve r(t).r(t) = (3 + ln(sec t))i + (4 + t)k, -?/2 < t < ?/2
A. ? = sin t
B. ? = 1 - cos t
C. ? = -cos t
D. ? = cos t
Answer: D
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For the functions f(x) and g(x), determine the domain of (f ? g)(x) (the product of f and g).f(x) = 
, g(x) = 
A. {x ? x is a real number} B. {x ? x is a real number and x ? 8 and x ? -5} C. {x ? x is a real number and x ? -8 and x ? 5} D. {x ? x is a real number and x ? 0}
Factor the GCF from the polynomial.x10y7 - x10y6 + x8y4 - x7y4
A. x7y4(x3y3 - x2y2 + x - 1) B. x7y4(x3y3 - x3y2 + x - 1) C. x6y4(x3y3 + x3y2 + x + 1) D. x7y4(x2y3 - x2y2 + xy - 1)
Replace the ? with < or >.944.804 ? 944.840
A. > B. = C. <
Solve the problem. The balance in your checking account is $666. You write checks for $32, $48, and $115. You then deposit $129 from your paycheck. What is your new balance?
A. $600 B. $990 C. $590 D. $342