Find the curvature of the curve r(t).r(t) = (2 + cos 3t - sin 3t)i + (7 + sin 3t + cos 3t)j + 10k
A. ? = 
B. ? = 
C. ? = 
D. ? = 
Answer: A
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Provide an appropriate response.The formula for calculating the sum-of-the-years-digits is 
.
A. True B. False
Solve the problem.The Habers purchase a $7000 living room set, putting $500 down and agreeing to pay $350.50 each month for 2 years. After 14 payments, they decide to pay off the note. How much is saved in interest? How much is needed to pay the balance of the loan?
A. $350.53, $3154.47 B. $353.37, $3152.13 C. $357.65, $3147.85 D. $351.71, $3153.79
Solve the equation. Express radicals in simplest form.-2k2 - 17 = -35
A. {-3, 3} B. {-6, 6} C. {3} D. {-17.5}
Solve the problem.Martin purchased some municipal bonds yielding 8% annually and some certificates of deposit yielding 11% annually. If Martin's investment amounts to $23,000 and the annual income is $2230, how much money is invested in bonds and how much is invested in certificates of deposit?
A. $13,000 in bonds; $10,000 in certificates of deposit B. $15,000 in bonds; $8000 in certificates of deposit C. $8000 in bonds; $15,000 in certificates of deposit D. $10,000 in bonds; $13,000 in certificates of deposit