Alvin has 75 dollars in his piggy bank. Every week he spends 5 dollars at the store. How Many weeks until he has 55 dollars in his piggy bank?

What is the factored form of the following expressions? d^2 – 13d + 36

How can constraints be used to model a real-world situation?

Answer asap and if you do you will get brainliest. catherine buys a gallon of ice cream from the store. after taking it home, she eats a fifth of a gallon of ice cream. her sister eats some of the ice cream as well. if two-thirds of the original amount of ice cream is left, then what fraction of a gallon of ice cream did her sister eat?