Solve the problem.In the following formula, y is the minimum number of hours of studying required to attain a test score of x: 
How many hours of study are needed to score 82? Round your answer to the nearest hundredth, if necessary.
A. 100.95 hr
B. 19.90 hr
C. 4.23 hr
D. 1.99 hr
Answer: D
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?The following table shows the number of magazines sold ?t weeks after the first issue was published.
?
102030405060
164219041973199719991642?
Based on the table, what do you expect is the limiting value of magazine sales?
What will be an ideal response?
Solve the problem.The year y when sales were s million dollars for a particular electronics company can be modeled by the radical equation y = 1.4
- 7, where y = 1 represents 2010, and so on. Use the model to predict the sales for 2015 to the nearest tenth of a million.
A. $87.2 million B. $90.2 million C. $88.2 million D. $89.2 million
For the given arithmetic series, what is Sn?a1 = 10, d = 11, and n = 40
A. 17,960 B. 35,920 C. 8980 D. 8990
Graph the inequality.x < -2y
A. 
B. 
C. 
D. 