Solve the compound inequality.-0.5x + 2.1 > 0.2x or 0.7x + 0.1 ? 5.7
A. x ? 8 or x < 3
B. x ? 8
C. x < 3
D. All real numbers
Answer: B
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Solve the problem.The function t(x) = -1.29x2 + 8.80x + 42.69 represents the temperature in Riversbend, IL from 11 P.M. on March 6, 2008 until 7 A.M. on March 7, 2008, where x is the number of hours after midnight on March 6, 2008. Determine the x-coordinate of the vertex of the graph of t(x). Then use this value in the function t(x) to estimate the maximum temperature. Round your answer for the vertex to the nearest hour. Round your answer for the temperature to the nearest degree.
A. x = 3.4; t = 57.6° B. x = 3; t = 58° C. x = -3; t = -2° D. x = 3; t = 68°
Provide an appropriate response.Find the product: (3x - y)(2x - 3y)
What will be an ideal response?
Express as a single logarithm.63 log7
+ log7(63x3) - log7 63
A. log7 x12 B. log7 x16/3 C. log7 x10/9 D. log7 x12/7
Determine if the function is a growth exponential or a decay exponential.y = 9e-9x
A. Growth B. Decay