A store had 250 bottles of water. Each week, 40% of the bottles were sold and 48 new bottles arrived in shipments. Which recursive function best represents the number of bottles of water in the store, given that f(0) = 250? (1 point) Select one: a. f(n) = f(n − 1) ⋅ 0.6 + 48, n > 0 b. f(n) = 250 − f(n − 1) ⋅ 0.4 + 48, n > 0 c. f(n) = f(n − 1) ⋅ 0.4 + 48, n > 0 d. f(n) = 250 − f(n − 1) ⋅ 0.6 + 48, n > 0

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