Solve the problem.Tom Quig traveled 260 miles east of St. Louis. For most of the trip he averaged 60 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 6 hours, how many miles did he drive at the reduced speed?
A. 15 miles
B. 30 miles
C. 20 miles
D. 40 miles
Answer: C
Mathematics
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Graph the linear equation.y = 4x - 6
A. 
B. 
C. 
D. 
Mathematics
Solve the system by using the inverse of the coefficient matrix.3x + y - 2z - w = 8-x + 2y + z - 4w = -122x - 2y + 3z + w = 8-2x - y - z - 4w = -7
A. ? B. {(1, -3, -2, -1)} C. {(3, 2, 1, -1)} D. {(3, -2, -1, 1)}
Mathematics
A spherical tank for liquefied petroleum is 16 in. in diameter. What is the ratio of surface area to the volume of the tank?
A. 
B. 
C. 
D. 
E. 
Mathematics
Solve the problem.A bridge is built in the shape of a semielliptical arch. It has a span of 94 feet. The height of the arch 25 feet from the center is to be 8 feet. Find the height of the arch at its center.
A. 8.3 feet B. 25.37 feet C. 15.04 feet D. 9.45 feet
Mathematics