Which expression has a coeffcient with the same value as 3(2) + 1

Ateacher has $80 to buy workbooks. each work book cost $3. if she buys as many workbooks as possible, how much money does she have leftover? a) $2 b) $4 c) $6 d) $8

1mile equals approximately 1.6 kilometers. which best approximates the number of miles in 6 kilometers?

Which of the following pair(s) of circles have las a common external tangent? select all that apply. a and b a and c b and c