Estimate the magnitude of the error involved in using the sum of the first four terms to approximate the sum of the entire series.
, -1 < t ? 1
A. 
< 
B. 
< 
C. 
< 0.20
D. 
< 
Answer: A
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Solve the equation for solutions over the interval [0, 2?). Write solutions as exact values or to four decimal places, as appropriate.tan 2x + sec 2x = 2
A. {0.3218, 3.4634} B. {1.1072, 4.2488} C. {2.2143, 8.4975} D. {0.6435, 6.9267}
Use the given graph of f(x) = ax2 + bx + c to solve the specified inequality.f(x) < 0
A. x < 6 B. no solution C. x < 0 D. all real numbers
Find the average of the list of numbers.303, 729, 694, 750
A. 643 B. 519 C. 619 D. 669
Solve the system of equations using substitution.
A. x = -12, y = 5; x = -5, y = 12 or (-12, 5), (-5, 12) B. x = 12, y = -5; x = 5, y = -12 or (12, -5), (5, -12) C. x = 12, y = 5; x = 5, y = 12 or (12, 5), (5, 12) D. x = -12, y = -5; x = -5, y = -12 or (-12, -5), (-5, -12)