?Find the solution set of the system of linear equations in the variables x and y (in that order) that has the following augmented matrix.
?
?
?
A. ?
B. ?
C. ?
D. ?
E. ?
Answer: B
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Solve the problem.The arch beneath a bridge is semi-elliptical, a one-way roadway passes under the arch. The width of the roadway is 34 feet and the height of the arch over the center of the roadway is 14 feet. Two trucks plan to use this road. They are both 8 feet wide. Truck 1 has an overall height of 
and Truck 2 has an overall height of 
. Draw a rough sketch of the situation and determine which of the trucks can pass under the bridge.
A. Truck 2 can pass under the bridge, but Truck 1 cannot. B. Both Truck 1 and Truck 2 can pass under the bridge. C. Truck 1 can pass under the bridge, but Truck 2 cannot. D. Neither Truck 1 nor Truck 2 can pass under the bridge.
Solve the equation.
- 
= 4
A. 120 B. -120 C. 60 D. -60
Solve the problem.There were 33,000 people at a ballgame in Los Angeles. The day's receipts from 
reserved seats and 
general-admission seats were 
How many of each type of seat were sold?
A. $14 seats: 15,000; $6 seats: 18,000 B. $14 seats: 18,000; $6 seats: 15,000 C. $14 seats: 9000; $6 seats: 24,000 D. $14 seats: 24,000; $6 seats: 9000
Solve for the indicated variable.S = 2?rh + 2?r2 for h
A. h = 
B. h = 
- 1
C. h = 2?(S - r)
D. h = S - r