Use basic identities to simplify the expression.
+ csc ? sin ?
A. 1
B. tan2?
C. sec2?
D. csc2?
Answer: D
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Find all critical numbers for the function. State whether it leads to a local maximum, a local minimum, or neither.f(x) = x - 
A. Local maximum at -7; local minimum at 7
B. Local maximum at -
; local minimum at 
C. Local maximum at 
; local minimum at -
D. No critical numbers; no local extrema
Find the maximum or minimum value of the given objective function of a linear programming problem. The figure illustrates the graph of feasible points. 
z = 9x + 10y. Find minimum.
A. minimum: 68 B. minimum: 56 C. minimum: 57 D. no minimum
Solve the problem.A hardware store has room for 1000 bags of fertilizer. The fertilizer manufacturer plans to ship x bags of fertilizer with a 
and y bags of fertilizer without the weed killer. This can be represented by 
. Graph this inequality in 
A. 
B. 
C. 
D. 
Multiply.81.463 × 100
A. 834.63 B. 8,146.3 C. 814.63 D. 8,096.3