Solve the problem.Suppose that one out of every five federal tax returns which are submitted has an error. Out of 10,000 submitted returns, find the probability that there are at most 2000 with an error.
A. approximately 0.25
B. approximately 0.95
C. approximately 0.5
D. approximately 0.025
E. approximately 0.75
Answer: C
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Identify the radicand.xy2
A. 
B. x + 4
C. 
D. xy2
Use the four-step method in problem solving to solve the problem.A college cafeteria pays student cashiers $7.70 per hour. Cashiers earn an additional $1.70 per hour for each hour worked over 35 hours per week. A cashier worked 41 hours one week and 39 hours the second week. How much did this cashier earn in this two-week period?
A. $556.00 B. $616.00 C. $633.00 D. $752.00
Find the exact value of the expression.cos 
cos 
- sin 
sin 
A. 0
B. 1
C. -1
D. 
Find a value of ? in [0°, 90°] that satisfies the statement. Leave answer in decimal degrees rounded to seven decimal places, if necessary.cot ? = 1.7009187
A. 36.0093720° B. 53.9906280° C. 30.4520188° D. 59.5479812°