Answer:
The graphs shown is NOT a function.
Step-by-step explanation:
We can use Vertical Line test to determine whether a given relation in the graph is a function or not. A relation is a function if one input results in only one output. If we draw vertical lines on the graph, and any of these vertical line intersect the graph at 2 or more positions, then it means that for one value of x, there are 2 values of y. Hence, for one input, there are more than one outputs. Therefore, the relation will not be a function.
We can see in the attached graph below that any vertical line intersects the graph at 2 positions. Hence, the given relation is graph is not a function.
Apologies for the rough drawing.
You can apply the same technique for the graph of the relation which is not shown, you'll get your answers to fill in the blanks
Answer:
5 hours 20 minutes
Step-by-step explanation:
Distance traveled to be 20 miles apart
180 - 20 = 160 miles
Combined speed
14 + 16 = 30 mph
time = distance / speed
t = 160/30
t = 5 1/3 hours
t = 5 hours 20 minutes
B. Because 20 is greter than 18.
<u>Answer:</u>
The city should pay at most $16 million to the contractors as an incentive for completing the project four weeks earlier.
<u>Explanation:
</u>
Total number of saved work hours = 4 weeks * 40000 workers/week * 10 hours/worker = 1,600,000 work hours
So, Money saved = 1,600,000 work hours * $10/ work-hour
= $16 million
Therefore, the city should pay at most $16 million to the contractors as an incentive for completing the project four weeks earlier.