Prove the identity.
= 
What will be an ideal response?
Answers may vary. One possible solution is:
= 
= csc x + 1 = 
+ 1 = 
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Solve the problem.The following table shows the average number of practice hours per week, for a sample of professional golfers, along with their average tournament scores per round. 
Find the equation of the line of best fit for the hours practiced per week and the average score per round.
A. y = -3.13x + 240.3 B. y = -0.226x + 76.6 C. y = -0.288x + 74.1 D. y = -0.254x + 75.4
Find the amount of the annuity due rounded to the nearest cent.
A. $81,677.26 B. $85,860.80 C. $43,229.78 D. $77,575.75
Multiply. Simplify, if necessary.
? 
A. 
B. 
C. 
D. 
Use regression to solve the problem. Round numbers to the nearest hundredth.The first column shows the independent variable (x). The second column shows the dependent variable (y).
Use linear regression to predict the value of y when x = 8.5.
A. 93.56 B. 80.81 C. 85.06 D. 89.31