Is set n closed under multiplication, n{all numbers of the form 2^n, for n a natural number}? if so what are the steps to prove it?

The distance between two cities is 368 miles. if the scale on the map is 1/4 inch=23 miles, what is the distance between the cities on the map?

Aresearch group wants to find the opinions’ of city residents on the construction of a new downtown parking garage. what is the population of the survey downtown shoppers downtown visitors downtown workers city residents

Simplify. 3(4+4x) (type your answer in with no spaces)