Find the indicated sum.
A. -2369
B. -2438
C. -2208
D. -2484
Answer: D
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Solve the equation. Use the change of base formula to approximate an exact answer to the nearest hundredth when appropriate.2x = 756
A. x = 378 B. x = log 378 C. x = log 756 D. x = log2756
The total daily revenue (in dollars) that Weston Publishing realizes in publishing and selling its English-language dictionaries is given by
?
?
where x denotes the number of deluxe copies and y denotes the number of standard copies published and sold daily. The total daily cost of publishing these dictionaries is given by
?
?
dollars. Determine how many deluxe copies and how many standard copies Weston should publish each day to maximize its profits. Please round the answers to the nearest integer.What is the maximum profit realizable? Please round the answer to the nearest dollar.
?
A. 815 deluxe copies, 1,051 standard copies; $13,281
B. 815 deluxe copies, 1,296 standard copies; $13,281
C. 938 deluxe copies, 1,296 standard copies; $8,694
D. 938 deluxe copies, 1,051 standard copies; $8,694
E. 938 deluxe copies, 1,051 standard copies; $15,637
Solve the problem.A boat heads upstream a distance of 30 miles on the Mississippi river, whose current is running at 5 miles per hour. If the trip back takes an hour less, what was the speed of the boat in still water? Give the answer rounded to two decimal places, if necessary.
A. 18.03 mph B. 6 mph C. 15 mph D. 16.58 mph
If 
is a child's rate of growth in pounds per year, which of the following expressions represents the increase in the child's weight (in pounds) between the years 3 and 7?
