Use a graphing calculator to find all real solutions of the equation.
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a) x ? 1.34
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A parabolic arch spans a stream 220 feet wide. How high above the stream must the arch be to give a minimum clearance of 20 feet over a channel in the center that is 180 feet wide?
A. 20 feet B. 31.325 feet C. 60.5 feet D. 80.5 feet E. 34.725 feet
Decide which of the 5 properties of a commutative group (closure, identity, inverse, associative, commutative) hold for the given system.
A. None of them B. Closure, identity, inverse, and associative only C. Closure, identity, associative, and commutative only D. Closure only
Solve the problem.A young woman wins $150,000 and buys 5 new cars. She chooses from cars that are priced at $40,000, $30,000, and $25,000 and spends all of the money. How many $25,000 cars did she buy?
A. 0, 1, 2, or 3 B. 0 C. 0 or 2 D. 6
Solve the equation or inequality.|3x - 9| - 2 > -7
A. ?
B. 
C. 
D. (-?, ?)