Multiply the expressions.(n - 12)(n + 12)
A. n2 - 24n - 144
B. n2 - 144
C. n2 - 24
D. n2 - 24n + 144
Answer: B
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Determine whether the equation is a function.y2 = 9 - x2
A. function B. not a function
Solve the problem. Round your answer to the nearest tenth unless indicated otherwise.Carol and Lu Yi carry a total of 7.1 liters of water as they begin a day hike. How many gallons of water are they carrying, to the nearest tenth?
A. 1.8 gal B. 7.5 gal C. 26.8 gal D. 6.7 gal
Solve the problem.The sales of a mature product (one which has passed its peak) will decline by the function S(t)= Soe-at, where t is time in years. Find the sales after 18 years if 
and 
(Round to the nearest whole number.)
A. 67,355 B. 2,059,009 C. 1822 D. 911
Determine whether the function whose graph is shown is a one-to-one function.
A. One-to-one B. Not one-to-one