Mr. smith and mr. stein were driving to a business meeting 300 miles from their office. mr. smith drove the first
x
miles, then mr. stein drove the rest of the way.
write an algebraic expression for how many miles mr. stein drove.

Write the following as a base and exponent

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

2.5 milligrams is equivalent to how many grams