13. What is the equivalent expression of “the sum of 4 and a number x"?
A. 4+x B. 4-X C. 4x D. 4:6
14. The phrase "six less than a number y” when translated to mathematical expression is
A. 6<y В. 6-у C. y-6 D. y+6
15. If the expression - 3xy - x2y2 + 1 is evaluated when x = -1 and y = -1, then what is the exact value?
A. -3 B. -1 C. 1 D. 3
A. 4+x B. 4-X C. 4x D. 4:6
14. The phrase "six less than a number y” when translated to mathematical expression is
A. 6<y В. 6-у C. y-6 D. y+6
15. If the expression - 3xy - x2y2 + 1 is evaluated when x = -1 and y = -1, then what is the exact value?
A. -3 B. -1 C. 1 D. 3
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Answer:
13. a
14. c
15. - 4
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