Isabella save to nichols a day if she doubles the number of nickels she says each day how many days in cluding today will it take her to save more than 500

9 days

Step-by-step explanation:

Given isabella saves a nickel a day.From this day onwards she kept on incresing the savings by doubling them.

Here it form's a geometric progression with first term(a) = 1 and common ratio (r) = 2

S(n) =

Given condition is S(n) >500

n ≥ 9

So it will take 9 days for her savings to be more than 500

b is the answer that makes most sense

step-by-step explanation:

#15. square

step-by-step explanation:

because quadrilatural (idk how to spell it) means somthing that is not 3d or like, equal sides (or somthing like that   you know what i meanz)

hope this halps!

bai!