Answer: y = 0.45x + 21
Step-by-step explanation:
let x represent the number of minutes used in a month.
Let y represent the monthly cost for x minutes.
If we plot y on the vertical axis and x on the horizontal axis, a straight line would be formed. The slope of the straight line would be
Slope, m = (304.5 - 183)/(630 - 360)
m = 121.5/270 = 0.45
The equation of the straight line can be represented in the slope-intercept form, y = mx + c
Where
c = y intercept
m = slope
To determine the y intercept, we would substitute x = 360, y = 183 and m = 0.45 into y = mx + c. It becomes
183 = 0.45 × 360 + c
183 = 162 + c
c = 183 - 162
c = 21
The equation for the monthly cost is
y = 0.45x + 21
If the store has 35 total gallons, 2/3,14 gallons, of that is outdoor. Since you are looking for indoor, you subtract the outdoor gallons from the total amount which equal 3/5 or 21. Then you multiply 21•22=$462
Answer:
b : -3x+3
Step-by-step explanation:
Answer: [A]: " x² − 2x <span>−</span> 1 = - x² + 3 " .
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Answer:
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Step-by-step explanation:
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