Convert as indicated. If necessary, round to the nearest tenth of a degree.129°F to degrees Celsius
A. 53.9°C
B. 174.6°C
C. 103.7°C
D. 264.2°C
Answer: A
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Solve the problem.A sample of 200 grams of radioactive substance decays according to the function 
where t is the time in years. How much of the substance will be left in the sample after 40 years? Round your answer to the nearest whole gram.
A. 0 grams B. 1 gram C. 2465 grams D. 58 grams
Given the function, find the indicated value.f(x) = 7 - 4x2; f(-5)
A. 107 B. -93 C. 47 D. 27
Solve the problem using the quadratic formula.The cumulative number (in thousands) of deaths from a certain disease from 2000 to 2010 is modeled by 
where x = 0 corresponds to 2000, x = 1 to 2001, etc. Use the formula for A to estimate symbolically the year when the total number of deaths reached 100 thousand.
A. 2008 B. 2005 C. 2007 D. 2006
Complete the table and use the table to estimate the limit.
x-0.1-0.01-0.001? ?0.0010.01 0.1 f(x)???????
A. 0 B. does not exist C. 7 D. 7.1