Provide an appropriate response.
One light year is 5.87 × 1012 miles. How many miles from Earth is an object that is 3.24 light years from Earth? Express your answer in scientific notation.
A. 1.90 × 1013
B. 19.02 × 1012
C. 9.11 × 1012
D. 1.81 × 1012
Answer: A
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Find the area of the shaded region.y = 2x2 + x - 6y = x2 - 4
A. 
B. 
C. 
D. 
Find the volume under the surface z = f(x,y) and above the rectangle with the given boundaries.z = x2 + y2; R = {(x, y): 0 ? x ? 1, 0 ? y ? 1}
A. 
B. 
C. 
D. 
Solve the problem.When the angular displacement ? of a pendulum is small (less than about 6°), the pendulum moves with simple harmonic motion closely approximated by src="https://sciemce.com/media/4/ppg__tttt0610191332__f1q26g5.jpg" alt="" style="vertical-align: -4.0px;" /> and 
where 
g is the acceleration due to gravity, and l is the length of the pendulum. Find ? as a function of time (in sec) if 
when 
A. ? = -2 cos 1.4t + 0.1 sin 1.4t
B. ? = 0.1 cos 1.4t
C. ? = -2 sin 1.4t + 0.2 cos 1.4t
D. ? = -2 sin 1.4t + 0.1 cos 1.4t
Simplify. Include the absolute value symbol if necessary.
A. |x + 3| B. x - 3 C. (x - 3)2 D. |x - 3|