Answer:
+12.5%
Step-by-step explanation:
This is rather simple. Subtract 72 from 81, then put the difference over 72. Then, multiply that by 100.
(81 - 72)/72 * 100
<em>Subtract 72 from 81 to get 9</em>
9/72 * 100
<em>Multiply 9 by 100 to get 900</em>
900/72
<em>Simplify the above fraction by cancelling out 9.</em>
100/8
<em>Divide 100 by 8 to get 12.5%</em>
The percent of change is +12.5%
I believe b is about 16.3, hope this helps
In analytic geometry, using the common convention that the horizontal axis represents a variable x and the vertical axis represents a variable y, a y-intercept or vertical intercept is a point where the graph of a function or relation intersects the y-axis of the coordinate system. As such, these points satisfy x = 0.
A coordinate grid has two perpendicular lines, or axes, labeled like number lines. The horizontal axis is called the x-axis. The vertical axis is called the y-axis. The point where the x-axis and y-axis intersect is called the origin. The numbers on a coordinate grid are used to locate points.
<span>f(x) is the function that models Peters total video game time.
</span><span>Peter played his favorite video game for 10 hours last week.
</span><span>Peters parents restricted him to 5 additional hours each week for the next 8 weeks.
After 8 weeks Peter will have played f(x) hours video game.
f(x)=10+8*x , where x is the number of hours Peter plays every week and this number is smaller than 5 (his parents restricted this number) , x<5
</span>
(2)
we know that
when two lines do not intersect , they can be parallel lines or skew lines
so,
Lines that do not intersect are called <u>parallel or skew lines</u>
(4)
we know that
A circle is the set of all points in a plane that are equidistant from a given point
so,
The set of points in a plane that are equidistant from a given point form a <u>circle</u>
(8)
Moving a figure around a fixed point in the plane is called making <u>a image of the figure</u>
(3)
A <u>translation</u> of the plane is a transformation which shifts all the points in a plane figure, without altering the shape of the figure
(6)
All the points on a line that are between two given points form a line <u>segment</u>
