The Ruiz family is exchanging euros for US dollars. The exchange rate is 1 euro equals 1.35261 USD. Since the
Ruiz family knows that USD are stated to the nearest
hundredth of a dollar, they used the conversion ratio
1.35 USD ). Will this give the Ruiz family the correct
1 euro unit
exchange?

, 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

hope this !

let me know

8

step-by-step explanation:

noncoplanar points are points that do not lie on the same line.