Solve the system of equations by elimination.
A. (0, -6)
B. (6, 0)
C. (0, 6)
D. (-6, 0)
Answer: B
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Find the curvature of the space curve.r(t) = -9i + (t + 2)j +(ln(cos t) + 9)k
A. ? = csc t B. ? = sec t C. ? = sin t D. ? = cos t
Solve the problem.Marco had a balance of 
in his checking account. The following positive entries (deposits) and negative entries (withdrawals) are made to the account. -273, 793, and -509What is the current balance in his account?
A. $447 B. $993 C. $1465 D. $2011
Decide whether the relation is a function, and give the domain and range.
A. Function; domain: [-3, 1]; range: [-5, 1] B. Function; domain: [-5, 1]; range: [-3, 1] C. Not a function; domain: [-5, 1]; range: [-3, 1] D. Not a function; domain: [-3, 1]; range: [-5, 1]
Factor the trigonometric expression.36 sec2y - 12 sec y + 1
A. (6 - sec y)2 B. (6 sec y + 1)2 C. (6 sec y - 1)(6 sec y + 1) D. (6 sec y - 1)2