Solve the linear system by using an inverse matrix.
A. {(-4, 3)}
B. {(-3, 4)}
C. {(3, -4)}
D. {(4, -3)}
Answer: D
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Find the derivative of the function at the given point and interpret the physical meaning of this quantity. Include units in your answer.Suppose that the speed of a train approaching a station is given by v (t) = (t - 8) 2, for 0 ? t ? 8, where t is measured in seconds and v(t) is measured in meters per second. Find v'(5).
A. v'(5) = 6 m/s per second; the instantaneous rate of change in the train's speed is 6 m/s2 at t = 5 s. B. v'(5) = -3 m/s per second; the instantaneous rate of change in the train's speed is -3 m/s2 at t = 5 s. C. v'(5) = -6 m/s per second; the instantaneous rate of change in the train's speed is -6 m/s2 at t = 5 s. D. v'(5) = -3 m/s; the instantaneous rate of change in the train's speed is -3 m/s at t = 5 s.
Rewrite the series using the new index j as indicated.
= 
A. 
B. 
C. 
D. 
Provide an appropriate response.Find the equation of the line that is parallel to the line 6x - 
y = 5 and passes through the point (1, 4). Write the equation in standard form.
A. 12x - y = 8 B. 6x - y = -3 C. 6x - y = 2 D. 12x - y = -3
Find an equation of the line.Horizontal line through (8, -2)
A. x = -2 B. y = -2 C. y = 8 D. x = 8