Brianna went to a carnival. she played five games and rode six rides. justin went to the same carnival and played seven games and rode eight rides. if brianna paid $11.75 and justin paid $16.15, how much did one game cost to play? a $0.50 b $0.75 c $1.25 d $1.50

Initially 100 milligrams of a radioactive substance was present. after 6 hours the mass had decreased by 4%. if the rate of decay is proportional to the amount of the substance present at time t, find the amount remaining after 24 hours. (round your answer to one decimal place.)

Any is very appreciated! (picture is provided below)not sure how to do this at all won't lie

About 9% of th population is hopelessly romantic. if 2 people are randomly selected from the population, what is the probability that at least 1 person is hopelessly romantic?