Solve the problem.One printer can do a printing job in 2 hr. Another printer can do the same job in 13 hr. How long does it take the two printers to do the job working together?
A. 1
hr
B. 2
hr
C. 1
hr
D. 
hr
Answer: A
Mathematics
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Find the least common multiple.t, t - 5
A. t - 5 B. 48 C. t D. t(t - 5)
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Simplify.(
+ 
)(
- 
)
A. 3
B. 6 - 2
C. 6 - 6
D. 9
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Find the indicated sum. Use the formula for the sum of the first n terms of a geometric sequence.
A. -366 B. 12 C. -1230 D. 75
Mathematics
Solve.The volume V of a given mass of a gas varies directly as the temperature T and inversely as the pressure P. If 
when 
and 
what is the volume when 
and 
A. 168 in.3 B. 108 in.3 C. 138 in.3 D. 98 in.3
Mathematics