Someone tell me how do i calculate this? i’m not sure how do i do this?

Jacob signs up to work for 2 1/2 hours at the school carnival. if each work shift is 3/4 hour, how many shifts will jacob work? (i just want to double check : |, for anybody that responds! : )

Maria walks a round trip of 0.75 mile to school every day.how many miles will she walk in 4.5 days

Can someone me with these two circle theorem questions asap?