Tai ran from his house to a position 300 m south of his home in 100 seconds what was his velocity

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

How do i do this? i don’t understand

If sr is 4.5cm and tr is 3cm, what is the measure in degrees of angle s?