Use the general multiplication rule to find the indicated probability.A sample of 4 different calculators is randomly selected from a group containing 50 that are defective and 24 that have no defects. What is the probability that all four of the calculators selected are defective?
A. 0.0531
B. 0.2002
C. 0.2084
D. 21.6733
Answer: B
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Factor out the GCF.20x9y7 + 36x3y5 - 12x6y3
A. 4x3(5x6y7 + 9y5 - 3x3y3) B. 4(5x9y7 + 9x3y5 - 3x6y3) C. 4x3y3(5x6y4 + 9y2 - 3x3) D. no common factor
Fill in the blank with one of the words or phrases listed below.
The 
of a list of rational expressions is a polynomial of least degree whose factors include all factors of the denominators in the list.
A. unit B. least common denominator C. complex fraction D. rational expression
The following table shows the value V, in dollars, of a stamp collection after t years. t 0 1 2 3 V $323.00 $345.61 $369.80 $395.69? A: Make a table of successive ratios to show that the value of the stamp collection can be modeled by an exponential function. Round your answer to two decimal places.B: Find an exponential model for the data. Round your answer to two decimal places.C: Plot the graph of the data points along with the exponential model. Include up to 10 years.D: According to the model, what is the percentage increase in the value of the collection over a 4.00-year period? Round your answer to two decimal places.
What will be an ideal response?
Multiply and simplify.13 ? 
A. 104
B. 
C. 
D. 