Simplify the exponential expression.(6x3)2
A. 36x6
B. 6x6
C. 6x5
D. 36x3
Answer: A
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Given matrix A, find the indicated cofactor.Find A42.A =
A. -3 B. -6 C. 6 D. 0
Solve the problem.Given the following revenue and cost functions, find the x-value that makes profit a maximum. (Recall that profit equals revenue minus cost.) R(x) = 58x - 2x2; C(x) = 25x + 98
A. 8.25 B. 9.25 C. 14.5 D. 16.5
Solve the system by substitution. If the system is inconsistent or dependent, say so.
A. (-3, 6) B. (3, 5) C. (2, 6) D. empty set solution; inconsistent system
Solve the problem.The population density of a city is given by 
where x and y are in miles, and p is the number of people per square mile, in hundreds. The city limits are as shown in the graph below. Determine the city's population.
A. 53,100 people B. 26,850 people C. 27,450 people D. 29,250 people