Solve the problem.Which of the following vectors is parallel to v = -10i - 8j?
A. w = -20i + 25j
B. w = 3i - 5j
C. w = 20i + 16j
D. w = 4i + 4j
Answer: C
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Solve the problem.Find the derivative of the function 
at the point 
in the direction in which the function increases most rapidly.
A. 
B. 
C. 
D. 
Solve the problem.To convert a temperature from degrees Celsius to degrees Fahrenheit, you multiply the temperature in degrees Celsius by 1.8 and then add 32 to the result. Find F as a linear function of c, and use this function to convert 34° C to °F.
A. 93.2°F B. 80.9°F C. 84.2°F D. 88.5°F
Use the Gauss-Jordan method to solve the system of equations. If the system has infinitely many solutions, let the last variable be the arbitrary variable.x - z = -5y + z = 1x + z = 2
A. {(-5, 1, 0)}
B. 
C. 
D. {(-3, -5, 7)}
Approximate the value using a calculator. Express answer rounded to three decimal places.2.3?
A. 13.690 B. 7.226 C. 13.914 D. 36.462