Solve.Approximate to the nearest hundredth the volume of a sphere with a radius of 4.5 centimeters. Use 3.14 for ?.
A. 3052.08 cu cm
B. 84.78 cu cm
C. 214.6 cu cm
D. 381.51 cu cm
Answer: D
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Solve the system of equations by the addition method. If the system does not have a single ordered pair as a solution, state whether the system is inconsistent or dependent.8x - 5y = 84x - 3y = 4
A. (1, 0) B. No solution, inconsistent C. (1, 1) D. (0, 1)
Use the x-intercepts to find the intervals on which the graph of f is above and below the x-axis.f(x) = (x + 15)2
A. above the x-axis: (-?, -15), (-15, ?) below the x-axis: no intervals B. above the x-axis: (-15, ?) below the x-axis: (-?, -15) C. above the x-axis: (-?, -15) below the x-axis: (-15, ?) D. above the x-axis: no intervals below the x-axis: (-?, -15), (-15, ?)
Complete the identity.tan (? - ?) = ?
A. -tan ? B. cot ? C. -cot ? D. tan ?
?A firm can produce 100 units per week. If its total cost function is 
dollars, and its total revenue function is 
dollars, how many units x should it produce to maximize its profit?
?
A. ?1250 units B. ?650 units C. ?97 units D. ?50 units E. ?100 units