Graph the function and y = cos x in the same rectangular system for 0 ? x ? 2?.y = 3 cos x
A. 
B. 
C. 
D. 
Answer: C
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Divide.-104 ÷ (-8)
A. 13
B. 3
C. -13
D. 
Solve the problem. When needed, use 365 days per year and 30 days per month.An initial investment of $790 is appreciated for 2 years in an account that earns 4% interest, compounded continuously. Find the amount of money in the account at the end of the period.
A. $1302.49 B. $1538.71 C. $855.80 D. $5837.35
Find the exact value under the given conditions.Given cos ? = - 
, with ? in quadrant II, and sin ? = 
, with ? in quadrant II. Find cot(? + ?).
A. 
B. - 
C. - 
D. - 
Use matrices to solve the system of equations (if possible). Use Gaussian elimination with back-substitution or Gauss-Jordan elimination.
?
?
?
A. ?(-3, -2, 6, 1) B. (-3, 2, -6, -1) C. (3, -2, 6, 1) D. (3, -2, 6, -1) E. (3, -2, -6, 1)