Solve the problem.A sample of 300 grams of radioactive substance decays according to the function 
where A(t) is the amount remaining after t years. How much of the substance will be left in the sample after 40 years? Round to the nearest whole gram.
A. 0 grams
B. 1394 grams
C. 1 gram
D. 102 grams
Answer: D
Mathematics
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Write the fractions as decimal numbers.
A. 0.0782 B. 0.782 C. 0.000782 D. 0.00782
Mathematics
The data table has been generated by a linear, quadratic, or cubic function f. All zeros of f are real numbers located in the interval 
By making a line graph of the data, conjecture the degree of f.
A. 1 B. 2 C. 3 D. 4
Mathematics
Find the center and radius of the circle.x2 + y2 + 18x - 14y + 94 = 0
A. (-7, 9); r = 36 B. (9, -7); r = 36 C. (7, -9); r = 6 D. (-9, 7); r = 6
Mathematics
Simplify the expression. Assume all variables represent positive real numbers.
A. 4x
B. 4x
C. 4x
D. x
Mathematics