Solve the system by graphing.
A. (1, 5)
B. (1, 1)
C. Infinitely many solutions
D. Inconsistent
Answer: D
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Find the integral.
A. 4 ln 2 B. -2 ln 2 C. 2 ln 3 D. 2 ln 2
Find a parametrization for the line segment joining the points.(3, -7, 4), (0, -7, 7)
A. x = 3t, y = -7t, z = -3t + 7, 0 ? t ? 1 B. x = -3t + 3, y = -7t, z = 3t + 4, 0 ? t ? 1 C. x = -3t + 3, y = -7, z = 3t + 4, 0 ? t ? 1 D. x = 3t, y = -7, z = -3t + 7, 0 ? t ? 1
Solve the problem.By walking src="https://sciemce.com/media/4/ppg__rrr0709190917__f1q37g6.jpg" alt="" style="vertical-align: -4.0px;" />
A. 5 hr
B. 3 hr
C. 2 hr
D. 1 hr
for one period of time and 
for another, Roger traveled 
Had he walked 
faster throughout, he would have 
miles. How many hours did he walk at
Show that the function is a solution of the wave equation.w(x, t) = ex - ct
A. No B. Yes