Solve the quadratic inequality. Write your answer in interval notation.x2 - 6x - 7 < 0
A. (-1, 7)
B. (-?, -1)
C. (-?, -1) ? (7, ?)
D. (7, ?)
Answer: A
Mathematics
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A farmer drives a tractor from one town to another, a distance of 60 kilometers. He drives 10 kilometers per hour faster on the return trip, cutting 1 hour(s) off the time. How fast does he drive each way? ? speed going: __________ kph ? speed returning: __________ kph
What will be an ideal response?
Mathematics
Find the reciprocal, if it exists.7.2
A. -7.2
B. No reciprocal
C. -6.2
D. 
Mathematics
Express as a single logarithm.logcm + logcn
A. logc(mn)
B. logcmn
C. logc
D. logcm ? logcn
Mathematics
Solve.
= 
A. -10 B. 0 C. 10 D. empty set
Mathematics