Find the mass of the lamina described by the inequalities?  and , given that its density is

varid="variable_id_field" variablename="impvar_dde5feff10b54014ac9d97b3f" />. (Hint: Some of the integrals are simpler in polar coordinates.)

 



A. ?
B. ?
C. ?
D. ?
E. ?

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Answer: A

Mathematics

Factor completely.x3 + x2 - 9x - 9

A. (x + 1)(x2 - 9) B. (x - 1)(x2 + 9) C. (x + 1)(x + 3)(x - 3) D. (x + 1)(x + 9)(x - 9)

Match the given equation with one of the graphs. -  = 1

A.

B.

C.

D.

Simplify. Assume all variables and radicands represent nonnegative real numbers.9 + 6 - 

A. 16
B.
C. 15
D. 14 

A mechanic is paid $13.00 per hour for regular time and time-and-a-half  for overtime. The weekly wage function is given by ? ? where h is the number of hours worked in a week. ? Evaluate W(30), W(50). ?

A. ?W(30) = 410, W(50) = 750 B. ?W(30) = 430, W(50) = 770 C. ?W(30) = 400, W(50) = 740 D. ?W(30) = 390, W(50) = 730 E. ?W(30) = 420, W(50) = 760