20x + 5 + 2x = 16 what is the answer

Lydia collected two sets of data one set of data shows an outlier. which set has an outlier, and which number is the outlier?

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?

How many different three-digit numbers can be formed using the digits 1 comma 2 comma 9 comma 6 comma 4 comma 3 comma and 8 without repetition? for example, 664 is not allowed.