Write the conjugate 
of the complex number z. Then find z
.z = 
+ 7i
A. 
= 
- 7i, z
= 56
B. 
= 
- 7i, z
= 63
C. 
= 
- 7i, z
= -42
D. 
= 
- 7i, z
= 42
Answer: A
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Determine if the argument is valid or invalid. Give a reason to justify answer.If the bough breaks, then the cradle will fall.The bough breaks. ? The cradle will fall.
A. Invalid by fallacy of the converse B. Valid by the law of syllogism C. Invalid by fallacy of the inverse D. Valid by the law of detachment
Write the words for the dollar amount as you would on a check.$549.87
A. Five hundred forty-nine dollars and 
B. Five hundred and forty-nine and 
dollars
C. Five hundred forty-nine and 
dollars
D. Five hundred forty-nine dollars and 
cents
A manufacturer of tennis rackets finds that the total cost 
(in dollars) of manufacturing 
rackets/day is given by 
varid="variable_id_field" variablename="impvar_d5d1460973ce46d18ae5f0bcd" />. Each racket can be sold at a price of 
dollars, where 
is related to 
by the demand equation 
.
?
If all rackets that are manufactured can be sold, find the daily level of production that will yield a maximum profit for the manufacturer.
?
__________ rackets/day
Fill in the blank(s) with the appropriate word(s).
Compute.65 centimeters + 1 centimeter - 8.7 centimeters
A. 72.7 centimeters B. 66.3 centimeters C. 57.3 centimeters D. 55.3 centimeters