Remark
The quick answer is C does not represent a function. It has two y values for x = 2. These two points are (2,1) and (2,3). That eliminates C. No x can have 2 y values and be called a function. A function can have many x vales for a single y and still be a function.
A has all different x values, so it could be classed as a function. There are no values where x has more than 1 y value.
B also has all different x values. It too is a function.
Answer
A and B are both functions. C is not.
D <<<<< Answer
One car travels at a speed of 75 kilometers per hour and the other car travels at a speed of 105 kilometers per hour.
Since both the cars are travelling towards each other their combined speed will be: 75+105=180 km/h.
Now, since the distance between the cars to start with is 540 km. Therefore, the time taken before the cars collide is:
hours.
Now, the speed of the canary is 100 km/h.
Therefore, the Canary flies flies for (100 km/h)x(3 hours) = 300 km before the cars collide.
Answer:
x = -6
Step-by-step explanation:
I think it’s either 2 or 3
Answer:
75%
Step-by-step explanation:
We can use the formula
- "of" is 5
- "is" is 3.75
- We will denote "percent" as x since that is what we are solving for
Now we just need to plug in the known values and solve for x
- Cross multiplying we get (5)(x) = (3.75)(100)
- Then simplifying we get 5x = 375
- Dividing by 5 we get x = 75%
$3.75 is 75% of $5