350,000 is what percent of 7 million

What is the solution of sqrt x+2-15=-3

Scrub a dub toothbrushes are $4.00 each. there is a 10% discount, but there is also a 6% sales tax after the discount is applied. what is the new price after tax? round to the nearest penny

What is the rate of change of a line that passes through (2,-5) and (6,-2)?