Solve and check.
+ 
= 
A. x = 28
B. x = -28
C. x = 4
D. x = 3
Answer: A
Mathematics
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Minimize the objective function C, subject to the given constraints. 
x ? 0, y ? 0
, 
A. C = 0 B. C = 45 C. C = 18 D. C = 27
Mathematics
Find all solutions.10x3 + 70x2 + 120x = 0
A. {-3, -4}
B. 
C. {0, -3, -4}
D. {0, 3, 4}
Mathematics
Write a formula for the general term (the nth term) of the sequence. Then use the formula for an to find the twelfth term of the sequence.3, 12, 21, 30, . . .
A. an = 6n - 2; a12 = 70 B. an = 6n - 9; a12 = 63 C. an = 9n - 6; a12 = 102 D. an = 9n - 2; a12 = 106
Mathematics
List all the elements of B that belong to the given set.B = {7, 
, -9, 0, 
, - 
, 2.1, 9?, 0.979797...}Integers
A. {7, -9, 0}
B. {7, 0}
C. {7, 0, 
}
D. {7, -9}
Mathematics