Solve the problem.In a survey about the number of siblings of college students, the following probability table was constructed: 
What is the probability that a student has at most 2 siblings?
A. 0.25
B. 0.42
C. 0.75
D. 0.58
Answer: C
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Write the number in expanded form.4718
A. 4 thousands + 7 hundreds + 1 ten + 8 ones B. 4718 thousands C. 8 thousands + 1 hundred + 7 ten + 4 ones D. 4 hundreds + 1 ten + 7 ones
Use the Gauss-Jordan method to find A-1, if it exists.A = 
A. 
B. 
C. 
D. Does not exist
Use synthetic division to find the quotient and the remainder when the first polynomial is divided by the second polynomial. x3 - 3; x - 1
A. quotient: x2 + x + 1; remainder: 3 B. quotient: x2 + x + 1; remainder: -2 C. quotient: x3 - x2 - x - 1; remainder: 0 D. quotient: x2 - x - 1; remainder: 0
Solve the problem.The data below represent the average monthly cost of natural gas in an Oregon home. 
Above is the graph of 45.05 sin x superimposed over a scatter diagram of the data. Find the sinusoidal function of the form 
which best fits the data.
A. y = 45.05 sin 
+ 21.20
B. y = 45.05 sin 
+ 66.25
C. y = 45.05 sin 
+ 66.25
D. y = 45.05 sin 
+ 21.20