7/9 = 42/54...when 42/54 reduces, it becomes 7/9...so this is proportional because proportions are nothing but equivalent fractions.
u could also check it this way...
12/21 = 15/24
cross multiply
(21)(15) = (12)(24)
315 = 288.....these do not equal and are therefore, not proportionate
440/4 = 300/3
110 = 100....not equal, so not proportionate
120/5 = 88/4
24 = 22.....not proportionate
66/82 = 99/123
0.804 = 0.804.......these are proportional
68/172 = 43/123
0.395 = 0.349......nope, not proportional
<h2>Answer: </h2><h2>D. 2/3 or

</h2><h2>~</h2><h3>To solve for 'X', isolate the variable 'x' by dividing each side by factors that don't contain the variable 'x'.</h3><h3>Exact Form:</h3><h3>x = 2/3</h3><h2>~</h2>
Hope you have a good day, Loves!
Also if I'm right can you let me know, please?
<em>Also Also if I am right can I please have Brainliest??</em>
<u><em>You don't need to, I'm just glad I could help. ^^</em></u>
It is 33.75 hope this helps
f(x) = (x - 1)² + 2
g(x) = (x-1)²
f(x) function is a g(x) function that was moved 2 units up, or
g(x) is f(x) that was moved 2 units down.