The same sequence may be defined three ways: 1) f(x) = 1/4 x + 1/4 for x = {1, 2, 3, ...}, 2) a1 = 1/2 and an + 1 = an + 1/4 for n = {1, 2, 3, ...} and 3) an = 1/4 + 1/4 (n − 1) for n = {1, 2, 3, ...}.

unless you made a typo, the answers are both a and c.

step-by-step explanation:

1.5/3 is .5 whereas 3/9 is .3333333 not proportional

22/33 is .66666 and 4/6 is also .66666 proportional

2/4 is .5 whereas 142/213 is .66666 not proportional

14/7 is 2 and 7/3.5 is also 2 proportional

you could've also checked it by doing this simple division:

if the larger fraction divides with the smaller fraction to equal 1, it is proportional. so let me show you what i mean:

when i divide 22/33 by 4/6 i get 1, so we know it is proportional, and it is the same with 14/7 and 7/3.5. now if i divide 3/9 by 1.5/3 i get .66666 so therefore we know it is not proportional.

there are many ways to do this so i wanted to show you some possible ways.

your answer is c. 97 (don't delete this again)

step-by-step explanation:

i am so sorry , i have no idea but i want points so i won't be a beginner anymore