at an amusement park, children are charged an entrance fee of $20 plus $3 per ride and adults are charged an entrance fee of $28
plus $4 per ride. Identify your variable with a 'let' statement and write expressions for both children and adults that represent the cost for each group.
The radius is from center to point on a circle. So your task is count distance between two points: S(10,6) and A(-3,3). Distance between two points A(x1, y1) and B(x2, y2) count from this formula: