Eliminate the parameter to obtain a Cartesian equation of the curve.x = et, y = e-t, -? < t < ?
A. y = ex, -? < x < ?
B. y = e-ln x, 0 < x < ?
C. y = e-x, -? < x < ?
D. y = eln x, 0 < x < ?
Answer: B
Mathematics
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Solve the problem.A rocket lifts off the surface of Earth with a constant acceleration of 30 m/sec2. How fast will the rocket be going 2.5 minutes later?
A. 3375 m/sec B. 4500 m/sec C. -4500 m/sec D. 2250 m/sec
Mathematics
Use the given functions to find the requested function.f(x) = 5x + 5, g(x) = 2x2Find (g - f)(x).
A. 3x3 + 3x2 B. 2x2 - 5x + 5 C. 2x2 - 5x - 5 D. 5x + 5 - 2x2
Mathematics
Answer the question about the given function.Given the function f(x) = -2x2 - 4x + 7, is the point (-1, 9) on the graph of f?
A. Yes B. No
Mathematics
Evaluate.-4x - 1 for x = 
A. - 
B. - 
C. -13
D. - 
Mathematics