Find the work done by F over the curve in the direction of increasing t.F = xyi + 3j + 5xk; C: r(t) = cos 2ti + sin 2tj + tk, 0 ? t ? 
A. W = 0
B. W = 
C. W = 
D. W = 
Answer: B
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Find 
for the given function.y = 6 sin(4x + 9)
A. -24 sin(4x + 9) B. 24 cos(4x + 9) C. -96 sin(4x + 9) D. -96 cos(4x + 9)
One of the values r (radius), d (diameter), C (circumference), or A (area) is given for a particular circle. Find the indicated value. Leave ? in your answer.A = 121? m2; d = ?
A. 11 m B. 22? m C. 22 m D. 121 m
The bar graph shows the percentages of health clubs in a large city that offer the service listed on the left. Use the graph to answer the question. 
Which services are offered at at least 20% of this city's health clubs and at most 45% of the clubs?
A. massage, Pilates, nutritional counseling, and body fat testing B. Pilates and nutritional counseling C. Pilates, nutritional counseling, and body fat testing D. massage, Pilates and nutritional counseling
Determine whether the equation defines y as a function of x. y = 
A. function B. not a function