Solve the problem.Find the probability of getting 2 tails when 3 fair coins are tossed.
A. 
B. 
C. 
D. 
Answer: D
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Solve.The textbook for a history class costs $35. There are 31 students in the class. Find the total cost of the history books for the class.
A. $1085 B. $66 C. $1054 D. $1050
Use the reciprocal and quotient identities to find the indicated function value.sec ? = - 
, tan ? = 
; find sin ?
A. 
B. 
C. - 
D. - 
Perform the indicated operation. Express the answer in scientific notation.(5 × 10-8)(4 × 103)
A. 200 × 10-5 B. 2 × 10-24 C. 20 × 10-4 D. 2 × 10-4
Provide an appropriate response.Suppose that you are solving a system of three linear equations and three variables by the row echelon method and you obtain the following augmented matrix. 
What row transformation would you perform next?
A. Multiply row 1 by 
.
B. Add 12 times row 1 to 4 times row 3 to obtain a zero in the third row, second column position.
C. Add row 1 to row 2.
D. Multiply row 2 by - 
.