Solve the problem.Find the magnitude of the torque in foot-pounds at point P for the following lever:
= 9 in. and 
= 30 lb
A. 20.39 ft-lb
B. 270 ft-lb
C. 16.48 ft-lb
D. 9.51 ft-lb
Answer: D
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Solve the problem.A particle is moving so that its x- and y-coordinates are given by 
and 
(in ft). Find the magnitude and direction of its velocity when 
A. 12 ft/s, 290° B. 3.0 ft/s, 110° C. 12 ft/s, 110° D. 4.0 ft/s, 70°
Solve the problem.The table lists the number of persons voting in an election by election year and sex, for a small community. 
Let this table be a partial numerical representation of a function f, where 
computes the number of persons who voted in the year x whose sex is y. Evaluate 
Interpret the result.
A. f(1964, Female) = 746 The number of females who voted in 1964 was 746. B. f(1964, Female) = 885 The number of females who voted in 885 was 1964. C. f(1964, Female) = 15 The number of females who voted in 1964 was 15. D. f(1964, Female) = 704 The number of females who voted in 1964 was 704.
Determine if the graph of the function is concave up or concave down.f(x) = 2x2 + 2x - 4
A. Concave up B. Concave down
Solve the equation.3x - 5 = 0
A. 
B. 
C. 
D. 