Keiko has been withdrawing the same amount of money from her bank account every month. the table below shows the amount of money in her account after different amounts of time.
time (months)
6
8
10
12
money (dollars)
460
330
200
70
answer the following questions.

(a)how much money was in her account before keiko starting withdrawing money?
dollars
(b)choose the statement that best describes how the time and amount of money in her account are related. then give the value requested. as time increases, the amount of money in her account decreases.
?
dollarspermonth
as time increases, the amount of money in her account increases.
?
dollarspermonth

answer: approximately 206 bones

i hope this u out a branlist and a would be greatly appreciated :

(b) 240

step-by-step explanation:

first, we use the pythagorean formula using the given side lengths to find x. then we use x to find the side lengths. then we add the side lengths to find the perimeter.

pythagorean theorem formula:

a^2 + b^2 = c^2

(x - 20)^2 + (x - 40)^2 = x^2

x^2 - 40x + 400 + x^2 - 80x + 1600 = x^2

x^2 -120x + 2000 = 0

(x - 100)(x - 20) = 0

x - 100 = 0 or x - 20 = 0

x = 100 or x = 20

we see that the solution x = 20 must be discarded because it will give a negative side length and a side length of 0. the only valid solution is x = 100.

perimeter = sum of the lengths of the sides

perimeter = x + x - 20 + x - 40

perimeter = 3x - 60

replace x with 100.

perimeter = 3(100) - 60

perimeter = 300 - 60

perimeter = 240