12x is the correct answer

Step-by-step explanation:
....
Answer: perm will cost $48
Step-by-step explanation:
Let x be cost of haircut
So perm will cost her 2x
So
x + 2x + 5 = 77
3x = 72
x = 24
Perm will cost 2x24 = 48
Step-by-step explanation:
We need to find an expression for
.
We can solve it as follows.
We know that,

So,

or

Hence, this is the required solution.
Answer & Step-by-step explanation:

The diameter of the circle is 8 m and the radius of the circle is 4 units. So, now we have to plug in the numbers so we can find the circumference and the area of the circle.


So, the circumference of the circle is 25.12 m.



So, the area of the circle is 50.24 units².