Solve the problem.Alan averages 26 miles per gallon of gasoline in his car. How far can he travel on 15 gallons of gasoline?
A. 41 miles
B. 395 miles
C. 46 miles
D. 390 miles
Answer: D
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Write a system of equations for the problem, and then solve the system.Two trains start from towns 572miles apart and travel toward each other on parallel tracks. They pass each other 5.5 hours later. If one train travels 18 mph faster than the other, find the speed of each train.
A. 63 mph; 41 mph B. 61 mph; 43mph C. 51 mph; 53 mph D. 56 mph; 48 mph
Use the quotient rule to divide and simplify.
A. 3
B. 6
C. 3
D. 
Identify the row operation that produces the resulting matrix.
? 
A. (-1)R2 ? R2 B. R1 + (-1)R2 ? R2 C. (-1)R1 + R2 ? R2 D. R1 + (-1)R2 ? R1
Solve the problem.The difference of the reciprocals of two consecutive integers is 1/12. Find the integers.
A. 4 and 5 or -4 and -5 B. 3 and 4 or -3 and -4 C. 2 and 3 or -2 and -3 D. 6 and 7 or -6 and -7