Solve.A promotional deal for long distance phone service charges a $15 basic fee plus $0.05 per minute for all calls. If Joe's phone bill was $50 under this promotional deal, how many minutes of phone calls did he make? Round to the nearest integer, if necessary.
A. 7 minutes
B. 1300 minutes
C. 2 minutes
D. 700 minutes
Answer: D
Mathematics
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Use the information below to determine the indicated set. U = {x | x ? N and x ? 15} A = {x | x ? N and 5 < x < 10} B = {x | x ? N and x is even and x < 14} C = {x | x ? N and 8 ? x ? 13} (A' ? C) ? B'
A. {1, 3, 5, 7, 9, 11, 13, 15} B. {6, 7, 8, 9, 11, 13} C. {3, 5, 9, 11, 13, 14} D. {1, 3, 5, 9, 11, 13, 14, 15}
Mathematics
Write percent as decimal.97%
A. 0.097 B. 0.97 C. 97.0 D. 9.7
Mathematics
Solve.A town has a population of 3000 people and is increasing by 9% every year. What will the population be at the end of 8 years?
A. 5160 people B. 5978 people C. 5484 people D. 6516 people
Mathematics
Solve the formula for the indicated variable.r = 
for S
A. S = 4?r
B. S = 16?2r2
C. S = 
D. S = 4?r2
Mathematics