Answer:
Car B = 43 miles per gallon
Car A = 43+4=47 miles per gallons
Step-by-step explanation:
Let the mileage of Car B be x miles per gallon
Hence the mileage of Car A will be x+4 miles per gallon
Distance traveled by each car in 1 gallon
Car A = x+4
Car B = x
Total Distance covered by both car in 1 gallon = x+(x+4) which is given as 90 miles
Hence x+(x+4)=90
2x+4=90
2x=86
dividing both sides by 2 we get
x=43
Mileage of Car B = 43 miles per gallon
Mileage of Car A = 43+4=47 miles per gallons
To find the answer, look at the graph and compare to the shapes shown below:
Choose the option that is most likely to the shape on the question.
Answer: Choice B-------------------------------------------
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The graph of f(x) is shown in the attached image. Imagine we can plot a point anywhere on this curve. Also imagine that this point can slide around as if it is a car on a roller coaster track. If the car moves to the left, then it will go downward ultimately. This indicates that
as x approaches -infinity, then y also approaches negative infinity
as
then
If you move the car to the right then it will move upward. So,
as x approaches positive infinity, then y approaches positive infinity
as
then
Combine all of this and that leads to
choice B as the final answerOne way to describe this end behavior is:
"Falls to the left and rises to the right"
2x + 7y = 4 (1)
-4x -3y = 14 (2)
=> 4x +14y = 8
-4x -3y = 14
=> 11y = 22 => y = 2
Subtitute y into the equation (1)
2x + 14 = 4
=> x = -5
So {x;y} = { -5;2 }