Determine all values of x at which the function is discontinuous.
?
?
A. -4 and 4
B. 9
C. -7 and 7
D. -6
Answer: A
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The snow pack at a certain ski resort at the beginning of ski season averages 23". After that it grows at a rate on average of 3.4 per day until the end of the season.
(a) What is the snowpack on the fourth day of the season? What is it on the 10th day? (b) Write an equation expressing the snowpack, S, in terms of the day, d, of the ski season. (c) What is the slope of the line this equation represents? (d) What should be the expected snowpack on the 31st day of the season?
Solve the problem.The inequality |T - 51| ? 17 describes the range of monthly average temperatures T in degrees Fahrenheit at a City X. (i) Solve the inequality. (ii) If the high and low monthly average temperatures satisfy equality, interpret the inequality.
A. T ? 68; The monthly averages are always less than or equal to 
B. 34 ? T ? 68; The monthly averages are always within 
C. 27 ? T ? 75; The monthly averages are always within 
D. 27 ? T; The monthly averages are always greater than or equal to 
Solve.It is estimated that y, the number of items of a particular commodity (in millions) sold in the United States in year x, where x represents the number of years since 2000, is given by the formula 
That is, 
represents 2000, 
represents 2001, and so on. According to the formula, how many items sold in 2009?
A. 2.82 million items B. 21.82 million items C. 42.48 million items D. 19.92 million items
Solve the problem.Find the interest earned on 
invested for 6 years at 
interest compounded monthly. Round to the nearest cent.
A. $3803.42 B. $3673.14 C. $3810.86 D. $3778.86