Multiply.7 ? (-3) ? 4
A. -16
B. 84
C. -84
D. 16
Answer: C
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Solve the problem.Kate decides to replace all the lights in her college apartment with energy saving light bulbs beginning this month. The packaging says the new bulbs will use 75% less electricity. If Kate's electric bill last month was $7.29 from bulb use alone, project how much Kate's electric bill will be this month for bulb use.
A. $6.54 B. $2.55 C. $5.47 D. $0.80 E. $1.82
The total weekly revenue (in dollars) of Country Workshop associated with manufacturing and selling their rolltop desks is given by the function
?
?
where x denotes the number of finished units and y denotes the number of unfinished units manufactured and sold each week. Compute 
and 
when x = 200 and y = 180. Interpret your results.
?
A. -$380/unit; -$20/unitThe weekly revenue decreases by $380/unit for each additional finished desk produced (beyond 200) when the level of production of unfinished desks remains fixed at 180; the revenue decreases by $20/unit when each additional unfinished desk (beyond 180) is produced and the level of production of finished desks remains fixed at 200.?
B. $36/unit; $24/unitThe weekly revenue increases by $36/unit for each additional finished desk produced (beyond 200) when the level of production of unfinished desks remains fixed at 180; the revenue increases by $24/unit when each additional unfinished desk (beyond 180) is produced and the level of production of finished desks remains fixed at 200.?
C. $36/unit; -$24/unitThe weekly revenue increases by $36/unit for each additional finished desk produced (beyond 200) when the level of production of unfinished desks remains fixed at 180; the revenue decreases by $24/unit when each additional unfinished desk (beyond 180) is produced and the level of production of finished desks remains fixed at 200.?
D. $24/unit; $36/unitThe weekly revenue increases by $36/unit for each additional finished desk produced (beyond 200) when the level of production of unfinished desks remains fixed at 180; the revenue decreases by $24/unit when each additional unfinished desk (beyond 180) is produced and the level of production of finished desks remains fixed at 200.?
Find the exact value under the given conditions.cos ? = - 
, 
< ? < ?; sin ? = - 
, ? < ? < 
Find tan (? + ?).
A. 
B. 
C. 
D. 
Make a time plot for the indicated data.In 1990, Dardenne received 48 inches of rain; in 1991, 50; in 1992, 48; 
in 1997, 51; in 1998, 55; and in 1999, 57. 
A. 
B. 
C. 
D. 