Without graphing, answer the following questions for the linear system.(i) Is the system inconsistent, are the equations dependent, or neither?(ii) Is the graph a pair of intersecting lines, a pair of parallel lines, or one line?(iii) Does the system have one solution, no solution, or an infinite number of solutions?x + 2y = 0y = - 
x
A. (i) neither
(ii) intersecting lines
(iii) one solution
B. (i) dependent
(ii) one line
(iii) infinite number of solutions
C. (i) inconsistent
(ii) parallel lines
(iii) no solution
Answer: B
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Suppose u and v are differentiable functions of x. Use the given values of the functions and their derivatives to find the value of the indicated derivative.u(1) = 2, u '(1) = -6, v(1) = 6, v '(1) = -3.
(3v - u) at x = 1
A. -3 B. 20 C. 16 D. -15
Sketch the angle in standard position.- 
A. 
B. 
If possible, evaluate the expression by hand. If not, approximate the answer to the nearest hundredth.(-4)2
A. 16 B. -8 C. 8 D. -16
Solve the problem. Round your answer to the nearest tenth, if necessary.Two pipes together can fill a large tank in 10 hr. One of the pipes, used alone, takes 15 hr longer than the other to fill the tank. How long would each pipe take to fill the tank alone?
A. 25 hr; 40 hr B. 15 hr; 30 hr C. 10 hr; 25 hr D. 12.5 hr; 27.5 hr