Simplify the expression using the quotients-to-powers rule.
5
A. 
B. 
C. 
D. 
Answer: A
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Write the augmented matrix for the system. 5x - 2y + 7z = 21-2x + 9y + 8z = -14 9x + 2y + 7z = 21
A. 
B. 
C. 
D. 
Solve the problem.A developer wants to enclose a rectangular grassy lot that borders a city street for parking. If the developer has 320 feet of fencing and does not fence the side along the street, what is the largest area that can be enclosed?
A. 19,200 ft2 B. 25,600 ft2 C. 6400 ft2 D. 12,800 ft2
Solve the problem.A boat can go 180 miles downstream in the same time it can go 120 miles upstream. The speed of the current is 4 miles per hour. Find the speed of the boat in still water.
A. 30 mph B. 16 mph C. 20 mph D. 24 mph
Write an equation to describe the situation.Mike is on vacation in Costa Rica. He has a budget of $910 for accommodation. He will stay as long as his budget allows. The more expensive hotel costs $66 per night and the budget hotel costs $43 per night. He plans to stay 7 more nights in the budget hotel than in the expensive hotel. Find the number of nights n that he will stay at the expensive hotel.
A. 43(n + 7) + 66 = 910n B. 43(n + 7) + 66n = 910 C. 43(n - 7) + 66n = 910 D. 43n + 66(n + 7) = 910