Answer: u r supposed to solve for substitution/add/subtract and ur answer should be (-2,9)
Step-by-step explanation:
2 goes into 400, that is

,
However, 2 goes into 400,
200 times.
The answer is 3 // The ones in blue are the domain and the ones in red are the range
The formula for arc length is S = ∅*r.
Where S is the arc length, ∅ is the angle measure in radians, and r is the radius of the circle.
S = *1
S =
She made an error in the STEP 1
she shouldnt multiply the numbers