If 2x + 7 = -21, what does 2 - x equal?

If f(x)= sqrt4x+9+2, which inequality can be used to find the domain of f(x)?

The amount spent on food and drink by 20 customers is shown below what is the modal amount spent and the median? 40 25 8 36 18 15 24 27 43 9 12 19 22 34 31 20 26 19 17 28

Atown has a population of 12000 and grows at 3.5% every year. what will be the population after 7 years, to the nearest whole number?