39.92 / 8 = 4.99 per filter
for 6 filters...
6 * 4.99 = 29.94
Irrational
Irrational
Rational
Rational
Irrational
Rational
Irrational
Irrational
Sorry if anything is wrong, I went off of memory! :)
Use the formula
a_n = a_1•r^(n-1)
a_23 = 25•(1.8)^(23 - 1)
Can you finish?
It's 4 units right and 3 units up :)