HELP PRAGYA! (x+6)(x-9)

The average human heart beats 72 beats per minute. how many times does it beat in 15 seconds?

Mr and mrs smith buy tickets for themselves and their four children. the cost of an adult ticket is ? 6 more than the adult ticket. the total cost of the six tickets is ? 40.50 work out the cost of an adult ticket. in your working let c be the cost of the child ticket and a be the cost of the adult ticket.

The perimeter of a stage is 116 feet. it is 17 feet wide. how long is it?