Chris went to the store to purchase 5.5 gallons of milk. when he got to the store, he noticed that the milk was no longer sold in gallons but in liters. which of the following shows the number of liters, with the correct number of significant digits, chris needs to buy in order to have 5.5 gallons of milk? (1 liter = 0.26418 gallon)

divide 5.5 gallons by 0.26418

5.5 / 0.26418 = 20.819

he would have to buy 21 liters

a) justify

step-by-step explanation:

justifying is just part of everyday life. justify kind of means proof so i think the answer is a) justify.

, 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