An unfair coin has .4 probability of landing on heads. if it is flipped 3 times what is the probability it will land on heads

Water flows at a steady rate from a tap. its takes 40 seconds to fill a 4 litre watering can from the tap. the rate at which water flows from the tap is halved. complete: 4 litres into cm3

If f(x) = x+8 and g(x) = 4x- 3, find (f+g)(x)

Abarbecue sold 26 hamburgers and hot dogs. hamburgers sell for $3.50 each and hot dogs sell for $2.00 each. if the barbecue made $70 in sales, determine and state the number of hot dogs sold.