Please help! Random answers will be reported!! will give brainliest!

The square root of 9x plus 7 plus the square rot of 2x equall to 7

Erin bought christmas cards for $2 each to send to her family and friends. which variable is the dependent variable?

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?