Answer:
140 kilometers in 7 weeks
Step-by-step explanation:
20 km x 7= 140 km
1st add 7 to both sides : 3z = 21, 2nd divide both sides with 3: z = 7
12 divided by 3 equals 4. And the. Parentheses means multiply, so 4x4=16
Hope this helps! Good luck!
Interval notation uses an ordered pair inside brackets. The ordered pair is ...
... lower end of the interval, upper end of the interval
The brackets are square if the endpoint is included (solid dot, or "≤"), and they are curved (parentheses) if the endpoint is not included (open dot, or "<"). The brackets don't have to match.
Here, your interval is -4 ≤ x ≤ -1, so we use square brackets around the end values -4 and -1.
... [-4, -1]
