Solve the inequality, then graph the solution.7t + 9 ? 6t + 17
A. (7, ?)
B. (-?, 8]
C. [8, ?)
D. (-?, 7)
Answer: C
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Identify the coefficient, variable(s), and degree.-8y13
A. 13, y, -8 B. 8, y, 13 C. -8, y, 13 D. 13, y, 8
Solve the differential equation.ex
+ 5ex y = 4, x > 0
A. y = e-x + ce-5x, x > 0 B. y = e-5x + ce-x, x > 0 C. y = ex + ce-5x, x > 0 D. y = e-x + e-5x, x > 0
Solve using the quadratic formula. Use a calculator to approximate the solutions to the nearest thousandth.5x2 - 20x + 11 = 0
A. 1.158, 3.842 B. 0.658, 3.342 C. -5.175, -2.492 D. -3.675, -0.992
Solve the problem. Round your answer to the nearest tenth, when appropriate.A rock falls from a tower that is 400 feet high. As it is falling, its height is given by the formula 
How many seconds will it take for the rock to hit the ground 
A. 10,000 sec B. 19.6 sec C. 20 sec D. 5 sec