The level of the water in a river rose 2.2 feet on Monday, rose 7.6 feet on Tuesday, fell 2 feet on Wednesday, and fell 7.6 feet on Thursday. What was the total change, in feet, of the water level in the river between Monday and Thursday?

The water level rose a total of 9.8 feet between Monday and Thursday

Step-by-step explanation:

I added 2.2 and 7.6 to get 9.8

Hope this helps! :)

0.2 feet

Step-by-step explanation: add the numbers into an equation like this,

2.2 + 7.6 - 7.6 - 2, simplify 2.2 - 2, solve 0.2

3x + 4y -25 =0 represents the amount of change sianna should recieve

, 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