Express using positive exponents. Then simplify.(-2)-4
A. 16
B. - 
C. 
D. -16
Answer: C
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?Which of the following is a divisibility rule for 18? ?
A. If a number ends in an even number and is divisible by 3, then it is divisible by 18. B. ?If a number ends in an even number and the sum of digits is divisible by 9, then it is divisible by 18. C. ?If last two digits of a number are divisible by 4 and the sum of digits is divisible by 9, then it is divisible by 18. D. If a number ends in an even number and the sum of digits is divisible by 6, then it is divisible by 18. E. ?If the sum of the digits of a number is divisible by 3 and 6-rule works, then it is divisible by 18.
Simplify, where possible.5(x + 9)
A. x + 45 B. 5x + 45 C. 45x D. 5x + 9
Find the Cartesian product or cardinal number as requested.n(A × B) = 32n(A) = 4Find n(B).
A. 28 B. 8 C. 36 D. 4
Solve the system by graphing. If there is no solution or an infinite number of solutions, so state. Use set notation to express the solution set.
A. 
B. {(0, 5)}
C. {(5, 0)}
D. {(5, 1)}