Factor, if possible.15 + 8z - 16z2
A. (4z + 3)(4 z - 5)
B. (4z - 3)(4 z - 5)
C. -(4z + 3)(4 z - 5)
D. -(4z - 3)(4 z - 5)
Answer: C
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Factor completely. If the polynomial is prime, say so.16y4 - 56y3 - 32y2
A. 8y2(2y - 1)(y + 4) B. 8y2(2y + 1)(y - 4) C. Prime D. y2(16y - 8)(y + 4)
Fill in the blank with one of the choices listed below. Some choices may be used more than once. 
When writing decimals in words, write "
" for the decimal point.
A. mode B. mean C. and D. sum
Solve the exponential equation. Use a calculator to obtain a decimal approximation, correct to two decimal places, for the solution.3(4x - 1) = 14
A. {0.95} B. {0.35} C. {1.42} D. {0.85}
The "Verhulst model" for population growth specifies the reproductive rate of an organism as a function of the total population according to the following formula:
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where p is the total population in thousands of organisms, r and k are constants that depend on the particular circumstances and organism being studied, and R(p) is the reproduction rate in thousands of organisms per hour. If 
and 
, find 
.
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A. 
B. 
C. 
D. 
E. 