The correct answer is B)
-3 < y ≤ 3
You can tell this by looking at the graph. The lowest that it goes is -3. You'll also note that the -3 has an open circle, which means that it isn't includes and thus needs a <.
The highest it goes it 3. You'll note that it has a closed circle, which means it is included and needs a ≤.
Answer:
- as written, -57
- as perhaps intended, C. -11
Step-by-step explanation:
The expression shown evaluates as ...
7 + 32(-5 +1)/2 = 7 +32(-4)/2 = 7 -128/2 = 7 -64 = -57
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If we assume your "32" is supposed to be 3², or 3^2, then the expression evaluates differently:
7 +3²(-5 +1)/2 = 7 + 9(-4)/2 = 7 -36/2 = 7 -18 = -11 . . . . matches choice C
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When in doubt, you can have the Google calculator evaluate your expression. However, you do have to write it properly and with all the required parentheses.
Wherever there is an x , plug in 20,000
Answer:
Question 3: 
Question 4: 
Question 5: 
Step-by-step explanation:
Question 3:

Question 4:
sign flips when r switches sides
Question 5:

<h3>
Answer:</h3>
95%
<h3>
Step-by-step explanation:</h3>
4 minutes is 4×(60 seconds) = 240 seconds.
The amount of dance time is (240 -12) seconds = 228 seconds.
The percentage of music time spent dancing is ...
... (228 seconds)/(240 seconds) × 100% = 95%