Gavin saved $16 to buy packs of baseball cards. his fathet gives him $4 more. if each pack of cards costs $5 how many packs can gavin buy

Find an bif a = {3, 6, 9, 12) and b = {2, 4, 6, 8, 10).

Ithink i know it but i want to be sure so can you me out ?

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