Answer:
-3
Step-by-step explanation:
You replace the x in the equation for 5 so the problem to work it out would be f(x)=-2(5)+7
then you just solve the equation normally
Answer:
C. 254.34 in^2
Step-by-step explanation:
The formula for area of a circle is πr² (pi x radius x radius).
Here, only the diameter is shown.
To find the radius, divide the diameter by 2.
18 / 2 = 9
9 is the radius.
We use 3.14 as π (pi).
Now we have the final equation.
pi x radius x radius
3.14 x 9 x 9 = 254.34 in^2.
Therefore, the area of the circle is 254.34 in^2.
He didn't do it as rise over run, or y2-y1/x2-x1
He did it reverse, which is incorrect.
The slope should be -1/2, because the line goes down 1 unit and then right 2 units.
Also it would be <u>y = -1/2x+1</u> in <u>y=mx+b</u>.
