An equation of direct variation is something like
If we have a value for x and y, we simply have to plug these values and see which constant k suits our case:
So, the relation
is a relation of direct variation and it includes the point (-10,-17).
Answer:
$17.5
Step-by-step explanation:
The operator, for a round-trip fare of $20, carries an average of 500 people per day.
It is estimated that 20 fewer people will take the trip, for each $1 increase in fare.
Therefore, for $x dollars increase in fare, 20x less people will take the trip and at that time the total fare F is given by
F(x) =(20 + x)(500 - 20x) = 10000 + 100x - 20x²
For F(x) to be maximum, the condition is
Hence, 100 - 40x = 0
⇒ x = 2.5
Therefore, the fare of $(20 - 2.5) = $17.5 will maximize the total fare. (Answer)
24/99 So 1000x = 234.234234234….
So now just take x away from 1000x 999x = 234.234234234… – 0.234234234… = 234 999x = 234 So x = 234/999 Simplify it down. for example x = 26/11 recurring bit doesn’t come directly after the decimal but its a bit harder.