Estimate the sum, difference, product, or quotient involved in the problem.An advertisement states that television sets are on sale at B&G Electronics. The prices are: 13-inch set, $147.99; 19-inch set, $208.95; 21-inch set, $231.99; 27-inch set, $289.97; 50-inch set, $519.97. About how many 50-inch sets can be bought with $8215.53?
A. 18 television sets
B. 16 television sets
C. 19 television sets
D. 14 television sets
Answer: B
Mathematics
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A. 
B. 
C. 
D. 
Mathematics
Use the substitution-of-variable technique to solve the system analytically.
+ 
= - 
- 
= - 
A. {(9, -5)}
B. {(-9, 5)}
C. 
D. {(-5, 9)}
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Use the quadratic formula to solve the quadratic equation.4x2 - 3x + 1 = 0
A. 
B. 
C. 
D. no real solution
Mathematics
Use the simplex method to find the optimal solution.
?
?
Maximize
subject to
?
A. maximum: 
B. maximum: 
C. maximum: 
D. maximum: 
E. maximum: 
Mathematics