Solve the problem.The formula C = 2x + 20 represents the estimated future cost of yearly attendance at State University, where C is the cost in thousands of dollars x years after 2002. Use a compound inequality to determine when the attendance costs will range from 34 to 42 thousand dollars.
A. From 2010 to 2014
B. From 2009 to 2013
C. From 2010 to 2012
D. From 2008 to 2012
Answer: B
Mathematics
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Find the x- and y-intercepts. If no x-intercepts exist, state so.f(x) = x2 - 2
A. (±
, 0), (0,2)
B. (0, ±
), (0,-2)
C. (0, ±
), (0,2)
D. (±
, 0), (0,-2)
Mathematics
Perform the indicated operations.-8.6 + (-2.8)
A. 5.8 B. -5.8 C. 11.4 D. -11.4
Mathematics
Multiply.(x - 4)(7x2 + x + 9)
A. 7x3 + 27x2 + 5x - 36 B. 7x3 - 27x2 + 13x - 36 C. 7x3 - 29x2 + 5x - 36 D. 7x3 - 27x2 + 5x - 36
Mathematics
Solve.An airplane travels 600 miles against the wind in 4 hours, and makes the return trip with the same wind in 2 hours. Find the speed of the wind.
A. 300 mph B. 75 mph C. 225 mph D. 150 mph
Mathematics