2nd round of free points (make sure to be here every day at 10AM and 3PM (eastern standard time))

For what values of the variable x is the expression square root of 7x+14+ square root of 7-x a real number?

You have 17 cats that live in houses on your street, 24 dogs, 3 fish, and 4 hamsters. what percent of animals on your block are dogs?

Which expression demonstrates the use of the commutative property of addition in the first step of simplifying the expression (-1+i)+(21+5i)+0