Graph the function by starting with the graph of the basic function and then using the techniques of shifting, compressing, stretching, and/or reflecting.f(x) = 
A. 
B. 
C. 
D. 
Answer: C
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Find the length of the parametric curve defined over the given interval.x = 5 sin t - 5t cos t, y = 5cos t + 5t sin t, 0 ? t ? 
A. 
?2
B. 
?2
C. 
?
D. 
?2
Solve the system of equations.5x + 2y + z = -112x - 3y - z = 177x + y + 2z = -4
A. (0, -6, 1) B. (-3, 0, 4) C. (3, 0, -4) D. (0, 6, -1)
Find the average of the numbers.Find the average of the list of Celsius temperatures. -13°, -7°, -3°, -4°, 0°, and -9°C
A. -4°C B. -6°C C. -5°C D. -7°C
Solve the problem.An airline charter service charges a fare per person of $250 plus $20 for each unsold seat. The airplane holds 200 passengers. Let x represent the number of unsold seats and write an expression for the total revenue R for a charter flight.
A. R(x) = 200(250 + 20x) or 50,000 + 4000x B. R(x) = (200 - x)(250 + 20x) or 50,000 + 4000x - 20x2 C. R(x) = x(250 + 20x) or 250x + 20x2 D. R(x) = (200 - x)(250 + 20x) or 50,000 + 3750x - 20x2