Solve the system by the substitution method. If there is no solution or an infinite number of solutions, so state. Use set notation to express the solution set.
A. {(5, -2)}
B. no solution; ?
C. {(6, -3)}
D. {(-6, -2)}
Answer: C
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Find the derivative of y with respect to x, t, or ?, as appropriate.y = ln 
A. 
B. 
C. 
D. 
Provide an appropriate response.Perform the indicated operation. Write answer with positive exponents: 
Fill in the blank(s) with the appropriate word(s).
Perform the indicated operation.74.03 + 92.19 + 29.636
A. 196.856 B. 195.956 C. 195.866 D. 195.856
Solve the problem.The weight of a body above the surface of the earth is inversely proportional to the square of its distance from the water of the earth. What is the effect on the weight when the distance is multiplied by 2?
A. The weight is multiplied by 2. B. The weight is multiplied by 4. C. The weight is divided by 4. D. The weight is divided by 2.