Brianna's thinking is wrong because obviously all of the expressions are going to equal -4 when x is 0 because -4 would be the only value. Also, if x was a different number, the expressions wouldn't be equivalent. The equivalent expressions are A. 9x - 3x - 4, and C. 5x + x - 4. This is because when both are simplified, they equal 6x - 4.
Step-by-step explanation:
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(-7,1) is a solution to the inequality y<0.5x+9
<span>6. 9 + 11y – y2 + y3 – 4y4
This expression has 5 terms.
7. </span><span>(2a + 3b) + 4c = 2a + (3b + 4c)
Associative property of addition, because you're moving the parentheses.
</span><span>
8. </span><span>If m = 4 and n = 4, then m = n
Substitution property.
9. </span><span>-9 + 5 – (-2) + 17
-4 - (-2) + 17
-2 + 17
15
10. </span><span>- 35 - (- 13 )
-22
11. -40 + 23 - 19 + 31
-17 - 19 + 21
36 + 21
57
12.</span><span> (-2)³
-2 * -2 * -2
-8
13. - 925
14. </span><span>15(3y – 5)
45y - 75
15. (7 + 6w)6
42 + 36w
16. </span><span>3n+57
17. 9p-63</span>
