Rachel is a stunt driver, and she's escaping from a building that is about to explode! The variable ddd models Rachel's distance
1 answer:
Answer:
38 meters per second
Step-by-step explanation:
We have been given that Rachel is a stunt driver, and she's escaping from a building that is about to explode! In equation , the variable d models Rachel's distance from her exit (in meters) seconds after the cameras began recording the stunt. We are asked to find the Rachel's speed.
We can see that the slope of the given equation is negative 38. Since Rachel is escaping from the building, so distance is decreasing 38 meters per second.
We can see that 220 is initial value that represents initial distance.
Since distance is decreasing 38 meters per second, so Rachel is traveling at a rate of 38 meters per second.
Therefore, Rachel's speed is 38 meters per second.
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Answer:
<u>Using below system of inequalities</u>
- y > 2x - 3
- y < x + 1
<u>Following the rules </u>
- 1. Finding x- and y - intercepts
- 2. Connecting with dotted line for each as no equal symbol present in any inequality
- 3. Shade respective regions
- 4. Solution is the intersection of the shades regions
- 5. Select any three points in the solution region
<u>Line 1</u>
- y > 2x - 3
- x- intercept: y = 0 ⇒ 0 = 2x - 3 ⇒ 2x = 3 ⇒ x = 1.5
- y - intercept: x = 0 ⇒ y = -3
- Shaded region is above the line (or to the left)
<u>Line 2</u>
- y < x + 1
- x- intercept: y = 0 ⇒ 0 = x + 1 ⇒ x = -1
- y - intercept: x = 0 ⇒ y = 1
- Shaded region is below the line (or to the right)
<u>Selected points are:</u>
- (-1, -1), (1, 1), (2, 2)
