Identify the property illustrated by the statement.9 + 5 = 5 + 9
A. Additive identity
B. Distributive property
C. Commutative property
D. Associative property
Answer: C
Mathematics
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Solve the problem.The cost C, in dollars, of having a dinner party catered by Elaine's Kosher Catering Company can be approximated by the function 
where n is the number of people attending the party. The banquet hall where the dinner will be located can hold no more than 150 people. Find the domain of the function.
A. [7, 55] B. (-?, 150] C. (-?, ?) D. [0, 150]
Mathematics
Simplify, if possible.
? 
? 
A. 
B. 
C. 1
D. 
Mathematics
Solve.6r + 10 = 52
A. 40 B. 36 C. 7 D. 1
Mathematics
Solve by substitution and check.3x + 12y = 3 x = -4y + 1
A. No solution B. Infinitely many solutions C. (1, 4) D. (4, 1)
Mathematics