Solve.How many different three-number "combinations" are possible on a combination lock having 23 numbers on its dial?
A. 10,626
B. 5313
C. 10,120
D. 20,240
Answer: A
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Solve the problem.Tom Quig traveled 250 mi east of St. Louis. For most of the trip he averaged 70 mph, but for one period of time he was slowed to 10 mph due to a major accident. If the total time of travel was 7 hr, how many miles did he drive at the reduced speed?
A. 60 mi B. 50 mi C. 40 mi D. 35 mi
Use rational equations to solve the problems.Approximately 28% of Samantha's gross monthly income is deducted for Social Security, federal withholdings, state withholdings, insurance, etc. If her gross monthly salary is $2,542, then what is her net pay?
A. $711.76 B. $1,830.24 C. $1,576.04 D. $965.96
Divide using long division.(x2 - 3x - 40) ÷ (x + 5)
A. x2 - 8 B. x - 3 C. x - 8 D. x2 - 3
Solve the problem.Alan is building a garden shaped like a rectangle with a semicircle attached to one short side. If he has 20 feet of fencing to go around it, what dimensions will give him the maximum area in the garden?
A. width = 
? 2.8, length = 5.6
B. width = 
? 5.6, length = 2.8
C. width = 
? 5.6, length = 7.2
D. width = 
? 3.6, length = 5.4