Evaluate.3(x + y) and 3x + 3y when x = 6 and y = 14
A. 32, 32
B. 60, 60
C. 32, 24
D. 32, 60
Answer: B
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Find the center of mass of the wire that lies along the curve r and has density ?.r(t) = 5ti + 5tj + 7t2k, 0 ? t ? 1; ?(x, y, z) = 
A. 
B. 
C. 
D. 
Solve the problem.Fred currently weighs 175 pounds. He joins the dessert of the month club and gains 1.5 pounds per month. Fred is also a member of Weight Watchers where his monthly charge is $2 per pound of his own weight. How much does Fred pay in dues over the course of three years?
A. $14,544 B. $612.50 C. $7272 D. $22,050 E. none of these
Provide an appropriate response.An employee who is paid a base salary plus a commission on sales is said to be on an escalating piece rate.
A. True B. False
Provide an appropriate response.To graph a straight line, we must find a minimum of points.
Fill in the blank(s) with the appropriate word(s).