Factor when possible.7x2 - 21xy - 28y2
A. 7(x - y)(x + 4y)
B. (7x - 7y)(x + 4y)
C. 7(x + y)(x - 4y)
D. Prime
Answer: C
Mathematics
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A. log 8 + log T B. log7 r + logT r C. logr 8 + logr T D. logr 8 + logr T + logr r
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Solve the problem.An average score of 90 for 5 exams is needed for a final grade of A. John's first 4 exam grades are 79, 89, 97, and 95. Determine the grade needed on the fifth exam to get an A in the course.
A. 90 B. 100 C. 85 D. 95
Mathematics
Find the sum of the geometric series.1 + 
+ 
+ 
+ 
A. 341
B. 
C. 
D. 
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Draw a vector representing the velocity. ? 30 mph due south ?
A. ?
B. ?
C. ?
D. ?
E. ?
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