Evaluate the rational expression.
when x = 3
A. - 
B. 
C. 
D. 
Answer: D
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The amount A, in grams, of a radioactive substance remaining after t years is given by the following table. Use an exponential model for these data to determine the half-life of the radioactive substance. That is, determine how long it takes for half of the substance to decay. Round your answer to two decimal places. t 3 4 5 6 A 157.36 154.21 151.13 148.11?
A. 25.46 years B. 34.50 years C. 34.31 years D. 25.00 years
Identify which graph matches the equation.f(x) = (x + 4)2 + 3AB
?
A. Graph A B. Graph B
Use mathematical symbols to translate the phrase. Use x to represent the unknown number. If there are two unknown numbers, use x and y to represent the numbers.9 less than a number
A. 
B. x - 9
C. 9 - x
D. x - (-9)
Locate the fraction on the number line.
A. 
B. 
C. 
D. 