Multiply.(x - 8)(x + 8)(x2 + 64)
A. x4 - 16x2 - 64
B. x4 - 64
C. x4 - 256x2 + 4096
D. x4 - 4096
Answer: D
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Multiply or divide measurement numbers, rounding to the correct precision.
A. 0.044375 
B. 0.04438 
C. 0.0444 
D. 0.044 
Use a graphing calculator to estimate the local maximum and local minimum values of the function to the nearest hundredth.y = 3x3 - 4x2 - 6x + 2
A. Local max: (-0.48, 3.68); local min: (1.38, -6.15) B. Local max: (-0.44, 3.61); local min: (1.45, -5.97) C. Local max: (-6.01, 1.38); local min: (3.63, -0.48) D. Local max: (-0.48, 3.63); local min: (1.38, -6.01)
Solve the problem.A boat moves 5 kilometers upstream in the same amount of time it moves 20 kilometers downstream. If the rate of the current is 9 kilometers per hour, find the rate of the boat in still water.
A. 9 km/hr
B. 3 km/hr
C. 15 km/hr
D. 6
km/hr
Factor the trinomial completely. If the polynomial cannot be factored, write "prime."x2 - x - 42
A. (x + 1)(x - 42) B. prime C. (x + 7)(x - 6) D. (x + 6)(x - 7)