What value of x makes the equation true -63=7x

You give a $4 tip for a meal that cost $22. approximately what percent of the bill was your tip?

Your company withheld $4,463 from your paycheck for taxes. you received a $713 tax refund. select the best answer round to the nearest 100 to estimate how much you paid in taxes.

Is experimental probibilty the same as the observed frequency in math? i need the answer asap!