Qand r are independent events. p(q) = 0.2; p(q and r) = 0.07. find p(r)

Each morning papa notes the birds feeding on his bird feeder. so far this month he has see. 59 blue jays, 68 black crows, 12 red robin's and 1 cardinal. what is the probability of a blue jay being the next bird papa sees

The difference between tax advoidance and tax evasion

Can someone check if i did this correct. it’s number 4 if you’re wondering.