Use technology to solve the system.0.2x - 0.3y = -20.5x + 0.6y = 76
A. (70, 70)
B. (90, 50)
C. (60, 80)
D. (80, 60)
Answer: D
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Add the real numbers. Write any improper fraction as a whole or mixed number where appropriate.-9 + (-7)
A. -17 B. 17 C. 16 D. -16
Use a graphing utility to graph the function over the indicated interval and approximate any local maxima and local minima. Determine where the function is increasing and where it is decreasing. If necessary, round answers to two decimal places.f(x) = x3 - 3x2 + 1, (-1, 3)
A. local maximum at (2, -3) local minimum at (0, 1) increasing on (-1, 0) decreasing on (0, 2) B. local maximum at (2, -3) local minimum at (0, 1) increasing on (-1, 0) and (2, 3) decreasing on (0, 2) C. local maximum at (0, 1) local minimum at (2, -3) increasing on (0, 2) decreasing on (-1, 0) and (2, 3) D. local maximum at (0, 1) local minimum at (2, -3) increasing on (-1, 0) and (2, 3) decreasing on (0, 2)
Solve for the specified variable. Assume that all other variables are nonzero.Ve = 
mv2; for v
A. v = ±
B. v = ±
C. v = 
D. v = 
Use the fundamental identities and the given information to find the exact values of the remaining trigonometric functions of x.cos x = 
and sin x = - 
A. tan x = - 
, csc x = - 
, sec x = 
, cot x = - 
B. tan x = - 
, csc x = 
, sec x = - 
, cot x = - 
C. tan x = - 
, csc x = - 
, sec x = 
, cot x = - 
D. tan x = - 
, csc x = 
, sec x = - 
, cot x = 