Find the distance between the two points on the coordinate plane. If necessary, round the answer to the nearest thousandth.(3, 4) and (-1, -7)
A. 44 units
B. 
units ? 11.705 units
C. 
units ? 10.247 units
D. 137 units
Answer: B
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Graph the integrand and use geometry to evaluate the integral.
A. 18 B. 324 C. 54 D. 162
Solve.The radioactive decay of radon 222 can be described by the equation A = Ce-0.1813t, where C is the original amount of radon and A is the amount of radon after t days. If 1.4 milligrams are in a laboratory container today, how much was there is the container 3 days ago? Round to the nearest hundredth.
A. 2.41 mg B. 2.21 mg C. 0.81 mg D. 2.07 mg
Solve the problem.The amount of a radioactive substance present, in grams, at time t in months is given by the formula 
Find the number of grams present in 2 years. If necessary, round to three decimal places.
A. 54.409 B. 527.803 C. 5278.032 D. 5.441
Use a table of square roots or a calculator to approximate to the nearest thousandth.
A. 194.000 B. 13.933 C. 13.928 D. 13.925