Two busses leave school moving in opposite directions. After 15 minutes, they are both 10 miles away from the school. Which statements correctly describe the motion of the busses

Both buses are going the same speed of 40 miles per hour.

Step-by-step explanation:

One hour divide by 15 minutes - 60/15 = 4

Since they are driving 10 miles per 15 minutes then 4 * 10 = 40

the answer is 489

step-by-step explanation:

, and

for

step-by-step explanation:

we can analyze the pattern at which the terms increase. let us denote , , , so that we can call

note the following:

the pattern: to get the next term value, we just add the next term number (e.g. 1st, 2nd, to the previous term value (term values are the given numbers in the question, 1, 3, 6, 10, 15,

from , to get to , we add

from , to get to , we add

etc.

we need to form a recursive formula, a formula that has the next term as a function of the previous term. so a possible recursive formula can be

, and for