The equation for the situation is 
The solution to the equation is 
First, you must set up the equation.

Then, you must simplify the terms.

Next, subtract 5.7 on both sides.

Finally, divide 5 on both sides

we are given

where
y is average gas mileage in miles per gallon
x is speed in miles per hour
we have to find average gas mileage at a speed of 60 miles per hour
so, we have

now, we can plug it and find y

we get

so,
the best approximate for the average gas mileage at a speed of 60 miles per hour is 30.7 mi/gal...........Answer
The y-intercept of the graph of a function is the value of f(0) for any function f.
That is, it is the y-value in the pair (0, y)
The y-intercept of <span>f(x) = 4x + 5 is f(0)=4*0+5=5
The y-intercept of (0, 2) is 2.
The y-intercept of </span>h(x) = 3 sin(2x + π) − 2 is:
h(0) = 3 sin(2*0 + π) − 2=3 sin(π) − 2=3*0-2=-2
<span>Answer: The function f has the greatest y-intercept.
</span>
Find the GCF of both numerator and denominator and then divide both the denominator and numerator by that and you will get the simplified fraction.