let's recall the vertical line test, it's a function if when dropping a vertical line on the graph, it only touches it once on the way down.
Check the picture below.
Answer:
1. 18
2. -8
3. 1
4. 84
Step-by-step explanation:
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Answer:
1 2/3 or 1 hour and 20 mins
Step-by-step explanation:
Answer:
90x+10y
Step-by-step explanation:
Add 89 and 1
Add 5 and 5
90x+10y in this order