Graph f(x) = x +2.

use the line tool and select two points to graph the line

Which expression is equivalent to (9x - 3 1/ + 1 3/8)

Expresa commuter train leaves downtown sation and travels at a average speed of 55 miles per hour towards the north side sation, which is 50miles away. thirty minutes later, express commuter train #7 leaves north side and travels at a average speed of 35miles per hour towards downtown sation. at the moment the two trains pass each other, how far(in miles) is train #12 from the downtown sation and how long(in minutes) has the #12 train been traveling

How many sides does a regular polygon have if each exterior angle measure is 45 degrees explain your answer, i really don't understand this.