1. Which of the following expressions has asimplified value of 10x - 13?A. -7x + 3x - 16+3B.-21x + 4 + 11x + 9C. X-10 + 9x - 3D.
1 answer:
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i'm doing cross-multiplication for this problem:
multiply 18 · 12, which is 216
divide 216 ÷ 10, which is 21.6
, is the final answer
Answer:
A. B and C are functions
Step-by-step explanation:
Given
See attachment for mapping diagrams
Required
Which represent function
For a mapping to be considered a function, each element of the input set must only point to 1 element of the output set.
Base on the above analysis, we have:
<u>Map A</u>
1 points to 6; 2 to 7; 3 to 8; and 4 to 9
<em>This is a function</em>
<u>Map B</u>
2 points to 0; 4 to 0; 6 to 0; and 8 to 0
<em>This is a function</em>
<u></u>
<u>Map C</u>
1 points to 8; 3 to 8; 5 to 9; and 7 to 9
<em>This is a function</em>
<u>Map D</u>
0 points to 2 and 5; 3 points 7 and 9
<em>This is not a function</em>
