758
-195
estimar diferencia cual es el resultado

563

Step-by-step explanation:

758-195=563

560 for estimate (For real, it's 563)

Step-by-step explanation:

We can round 758 to 760.

We can round up 195 to 200

760-200=560

:)

i believe the correct answer is b.

, 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