Answer:
The midline of the function is y = 2.
Step-by-step explanation:
Midline is the horizontal line that passes exactly in the middle between the graph's maximum and minimum points.
The midline of a sinusoidal function passes exactly in the middle of its extreme values.
Since the amplitude of a sinusoid is equal to the vertical distance from its midline to one of its extrema, we can calculate the midline using one of the following formulas.
<em>midline = max value − amplitude</em>
<em>midline = min value + amplitude</em>
According to the graph, the maximum value of the function is 5.5, and the amplitude is 3.5.
So, the midline is
<em>midline = max value − amplitude</em>
<em>midline = </em>5.5 − 3.5 = 2
we know that
1 gal = 3.7854 liters
<u>
Convert 38 l of gasoline to gallon
</u>
by proportion
![\frac{1}{3.7854} \frac{gal}{l}=\frac{x}{38}\frac{gal}{l}\\\\ 3.7854*x=38\\ \\ x=38/3.7854\\\\ x=10.04\ gal](https://tex.z-dn.net/?f=%5Cfrac%7B1%7D%7B3.7854%7D%20%5Cfrac%7Bgal%7D%7Bl%7D%3D%5Cfrac%7Bx%7D%7B38%7D%5Cfrac%7Bgal%7D%7Bl%7D%5C%5C%5C%5C%203.7854%2Ax%3D38%5C%5C%20%5C%5C%20x%3D38%2F3.7854%5C%5C%5C%5C%20x%3D10.04%5C%20gal)
<u>Find the cost</u>
we know that
The gas costs $2.09 per gallon
so
Multiply $2.09 by the total of gallons
$2.09*10.04=$20.98
therefore
<u>the answer is</u>
$20.98
Answer:
y= -1x
Step-by-step explanation: