Plot and interpret the appropriate scatter diagram.The table gives the times spent watching TV and the grades of several students. 
Effect of Watching TV on Grades 
A. Effect of Watching TV on Grades
More hours spent watching TV may
reduce grades.
B. Effect of Watching TV on Grades
More hours spent watching TV may
increase grades.
C. Effect of Watching TV on Grades
More hours spent watching TV may
increase grades.
D. Effect of Watching TV on Grades
More hours spent watching TV may
reduce grades.
Answer: A
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Perform the indicated operation(s). Simplify if possible.
+ 
A. 
B. 
C. 
D. 
Solve the problem.The angle of elevation ? of the sun in the sky at any latitude L is calculated with the formula 
? is the number of radians that the Earth has rotated through since noon when ? = 0. D is the declination of the sun. Westville has latitude 
Find the angle of elevation ? in degrees of the sun at 3 PM on February 29, 2012, where at that time 
and 
alt="" style="vertical-align: -4.0px;" /> A. 28.6° B. 0.5° C. 27.4° D. 9.8°
The perimeter of this pentagon is 280 cm. Find the lengths of the sides.
?
?
A. 
B. 
C. 
D. 
E. 
Find the angle between vectors v and w. Round the answer to the nearest tenth of a degree.v = 7i - 4j, w = 2i - 9j
A. 141.8° B. 129.3° C. 47.7° D. 15.4°