Please help me. I have no idea to this question.
a) 3ax+3ay-bx-by
b) 10ay²-5by²+2a²y-aby

1foot = 12 inches; 1 yard = 3 feet

Factor the monomial completely 42a3b3

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