A runner runs from a parking lot and then runs laps around a field. The number of steps, y, she has taken after x laps can be modeled by the equation y = 120 x + 150. What does the number 150 represent?
The number of steps she takes from the parking lot
to the field
The number of laps the runner takes around the
field
The total number of steps the runner takes
The number of steps she takes on each lap

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 do i start to solve? would appreciate a walk-thru! a bird sitting 16ft above the ground in an apple tree dislodges an apple. after how many seconds does the apple land on the ground? (assuming that no branches will interfere with it's fall)

How can writing phrases as algebraic expressions you solve problems?