Since all circles are similar, a proportion can be set up using the circumference and diameter of each circle. substitute the values d1 = 1, c1 = π, and d2 = 2r into the proportion. which shows how to correctly solve for c2, the circumference of any circle with radius r?

Solution:

Circumference of Circle = 2 π r= π × Diameter of circle

To find

Yes , all circles are similar, a proportion can be set up using the circumference and diameter of each circle.

→→→Correct step

→→

answer:

(-8,7)

explanation:

we know that  

f

(

−

3

)

=

7

therefore, if we wish to get the output as 7, in the function, we need to have our input to be -3.

looking at the function  

f

(

x

+

5

)

, what should the value of x be, such that the input in the function becomes 7?

we simply equate the terms,

x

+

5

=

−

3

x

=

−

8

thus, the point on the new function would be  

(

−

8

,

7

)

answer: all of the odd numbers were opened

the first person was the one that was opening all of the lockers. since one is odd, this causes all of the odd number lockers to be opened in the end.