In a certain​ region, the probability of a baby being born a is instead of 0.5. Let A denote the event of getting a when a baby is born. What is the value of ​?

Haley buys 9 pounds of apples for $3. how many pounds of apples can she buy for $1?

Last month, a 770 g box of cereal was sold at a grocery store for $3.10. however, this month, the cereal manufacturer launched the same cereal in a 640 g box, which is being sold at $2.50. what is the percent change in the unit price?

Combine like terms to make a simpler expression 3z+z