Factor the polynomial completely.27a3 - 64b3
A. (3a + 4b2)(9a2 - 12ab + 16b2)
B. (27a - 4b)(a2 + 12ab + 16b2)
C. (3a - 4b)(9a2 + 16b2)
D. (3a - 4b)(9a2 + 12ab + 16b2)
Answer: D
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Express the value of the inverse hyperbolic function in terms of natural logarithms.cosh-1 
A. ln 5
B. ln 
C. ln 
D. ln 4
Find the exact value of the expression.
A. -2
B. - 
C. -
D. - 
Estimate the value of the quantity.The table gives dye concentrations for a cardiac-output determination. The amount of dye injected was 
Plot the data and connect the data points with a smooth curve. Find the area under the curve using rectangles. Use this area to estimate the cardiac output.
Time (sec)
Dye concentration (mg/L)
A. 0.1 L/min B. 17.7 L/min C. 8.9 L/min D. 406.0 L/min
Compute the distance between the points.(2, -7, -2), (-7, 3, -9)
A. 6
B. 
C. - 
D. 