Express the rule in function notation. (For example, the rule "square, then subtract 5" is expressed as the function f(x) = x2 − 5.)
Multiply by 4, then subtract 8.
f(x) =

Guys i really need or i have to stay late up night

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

The function models the number of accidents