I have no idea what the problem was with

If angle 2=3x +1 and angle 3=2x +4what is angle 2

What is the area of the shaded sector?

Acentral angle measuring 160 degrees intercepts an arc in a circle whose radius is 4. what is the length of the arc the circle formed by this central angle? round the length of the arc to the nearest hundredth of a unit. a) 4.19 units b) 6.28 units c) 12.57 units d) 12.57 square units