Answer:
15
Step-by-step explanation:
Substitute a and b then
Follow PEMDAS
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Answer:
10
Step-by-step explanation:
20 divided by 4 = 5 and times it from there
Answer:

Step-by-step explanation:
0 = 0 ± b

* Parallel Lines have SIMILAR <em>RATE OF CHANGES</em> [<em>SLOPES</em>], so −4 remains the way it is.
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Answer:
-7 OR -9
Step-by-step explanation:
8-7 in the inside
Absolute value of 1 is 1
OR
8-9 in the inside for -1
Absolute value of -1 is 1
Absolute value signs makes everything positive