Match the vector equation with the correct graph.
r(t) = sin tj - cos tk; 0 ? t ? 
A. Figure 4
B. Figure 2
C. Figure 1
D. Figure 7
Answer: B
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Solve the problem.A man earned $3000 the first year he worked. If he received a raise of $600 at the end of each year, what was his salary during the 15th year?
A. $12,000 B. $11,400 C. None of these D. $8400
Graph the function.f(x) = x2
A.
B.
C.
D.
Evaluate each function. Round your answers to four decimal places. ? cos17°36' and sin67°23' ?
A. 1.0032 and 0.9731 B. 1.0532 and 1.0231 C. 1.1532 and 1.1231 D. 1.1032 and 1.0731 E. 0.9532 and 0.9231
Find the standard deviation.The management of an amusement park wanted to determine the amount of waiting time for the park's oldest roller coaster. The following data represents a random sample of waiting times in minutes (rounded to the nearest minute): 14 7 11 15 17 7 7 11 13What is the standard deviation? Round your answer to one decimal place.
A. 3.5 min B. 1.4 min C. 4.0 min D. 3.7 min