Translate this sentence in Spanish
My mother loves to read to me.

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

Which of the following parabolas opens down?

Two friends are reading books. jimmy reads a book with 21,356 words. his friend bob reads a book with one-and-a-half times as many words. which expression represents the number of words bob reads?