Which properties are illustrated by these equations? 1/2 times 3/3 =3/6 2/3 times 3/2 =1 its due !

How many grams the dog will eat in 3 days?

Janie has $3. she earns $1.20 for each chore she does and can do fractions of chores. she wants to earn enough money to buy a cd for $13.50.

In the equation sqrt(n+5)-sqrt(11-10)=1. what is the value of n