Find the upper quartile of the set of ordered data to the nearest whole number
21, 25, 25, 29, 34, 38, 45, 49

A. 26
B. 49
C. 32
D. 42

hello from mrbilldoesmath!

answer:

a(n) - a(n-1) -3

discussion:

this ones a bit interesting. given a(n) = 5 - 3n consider this:

a(n-1) = 5 - 3(n-1)

          = (5 - 3n) + 3             => but a(n) = 5 - 3n, the first term

          = a(n)   + 3                 => subtract 3 from both sides

a(n-1) -3 = a(n)  

or

a(n) - a(n-1) -3

you,

mrb

probably the last option

step-by-step explanation:

idk wbu

step-by-step explanation: