Answer:
I hate maths it's a boring subject
The relationship between Sabir and calories he burns can be modeled using a linear function given by:
y=ax+b
where
a=slope
b=y-intercept
from the graph, the slope will be given as follows:
taking points (3,15) and (12,60)
a=(60-15)/(12-3)=5 calories/minute
thus using the slope and a point (3,15) the equation will be:
a(x1-x)=(y1-y)
plugging the values we obtain:
5(x-3)=y-15
5x-15=y-15
thus
y=5x
thus the equation is:
y=5x
Answer:

Step-by-step explanation:
<u>Step 1: Determine the area of the black area</u>



<u>Step 2: Determine the area of the entire white and black area</u>



<u>Step 3: Determine the difference to just get the white area</u>


Answer: 
Well, to find the circumference of a circle, we can use the formula
C=2

r.
So just plug in 3.5 into the formula.
C=2

3.5.
Multiply and we get C=21.99. which is about 22
So our answer would be C. 22 feet.
Hope I helped!
Answer:

Step-by-step explanation:
Let
x-----> the number of girls
y-----> the number of boys
we know that
-----> equation A

isolate the variable y
-----> equation B
Substitute equation B in equation A


