Answer:
60°, arms 6
Step-by-step explanation:
let the total arms = n
total generated angles in a regular polygon is = (n-2)×180
now,
(n-2)×180 = 120 n
or, 180n - 360 =120n
or, 60n = 360
or, n = 6
C
Because .75 times 9 would give you the price of the books and then you would have to add C, the amount left to get to 20.
The domain is the x intercept and the y intercept is the range