Use the horizontal Line Test to determine if the function is one-to-one and so has an inverse function.
A. f is one-to-one
B. f is not one-to-one
C. cannot be determined
Answer: A
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Solve the differential equation.y'' + 14y' + 29y = 0
A. y = e-7x(C1 cos 2
x + C2 sin 2
x )
B. y = e7x(C1e 2
x + C2e- 2
x )
C. y = e-7x(C1e 2
x + C2e- 2
x )
D. y = e-2
x(C1e 7x + C2e- 7x )
Solve the system of equations by the addition method.
A. (6, 2) B. (-7, 2) C. (-6, 1) D. no solution
Determine whether the system is consistent or inconsistent and whether the equations are dependent or independent.6 = 9x + 4y-12y - 27x = -18
A. Consistent; independent B. Inconsistent; dependent C. Inconsistent; independent D. Consistent; dependent
Solve the problem.A company predicts that sales will increase rapidly after a new product is released, with the number of units sold weekly modeled by N = 7000(0.2)0.5t, where t represents the number of weeks after the product is released. What is the expected upper limit on the number of units sold per week?
A. 8400 units B. 7000 units C. 9100 units D. 1400 units