Solve the problem.A nuclear scientist has a sample of 
of a radioactive material which has a half-life in hours. She monitors the amount of radioactive material over a period of a day and obtains the following data. Use a graphing utility to fit an exponential function to the data. Predict the amount of material remaining at 40 hours.
.
A. y = 86e-0.071x, 5.0 mg
B. y = 100e-0.077x, 6.7 mg
C. y = 100e-0.077x, 4.6 mg
D. y = 92e-0.0686x, 5.9 mg
Answer: C
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Determine the value of the literal numbers in the given matrix equality.
= 
A. m = -9, x = 1, n = -6, y = -4, p = 3 B. m = -6, x = 6, n = -9, y = -4, p = 3 C. m = -6, x = 6, n = 1, y = -4, p = 3 D. m = -6, x = 1, n = -9, y = -4, p = 3
Add.
A. 53,945 B. 39,553 C. 40,553 D. 40,753
Graph the line.-28y - 4x = 36
A. 
B. 
C. 
D. 
Solve the right triangle. If two sides are given, give angles in degrees and minutes.
B = 65.4834°, c = 3,851.3 mGive side lengths to two decimal places.
A. A = 24.5166°; a = 1,661.07 m; b = 3,504.07 m B. A = 24.5166°; a = 1,507.78 m; b = 3,488.77 m C. A = 24.5166°; a = 1,598.12 m; b = 3,504.07 m D. A = 24.5166°; a = 1,598.12 m; b = 3,458.68 m