Solve the given trigonometric equation analytically (using identities when necessary for exact values when possible) for values of x for 0 ? x < 2?.cos x = sin x
A. 
, 
B. 
, 
C. 
, 
D. 
, 
Answer: C
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A group of 7 friends are going to a concert. Tickets cost $9 each and they pay an additional $7 per person to upgrade their tickets to the front row. What is the total cost for all of their tickets?
A. $441 B. $122 C. $14 D. $112
Which system of inequalities matches the given calculator-generated graph?
A. y > -x2 + 2 y < 5 B. y > -x2 + 2 y > 5 C. y < -x2 + 2 y < 5 D. y < -x2 + 2 y > 5
Solve the equation.x - 8.9 = 9.3
A. x = 0.4 B. x = 18.2 C. x = 0 D. x = -0.4
Find the indicated probability.The following contingency table provides a joint frequency distribution for a group of retired people by career and age at retirement. Age at Retirement 
Suppose one of these people is selected at random. Compute the probability that the person either 
A. 0.507 B. 0.253 C. 0.064 D. 0.443