Given the sequence: 1;x; 6;y:15 ... The sum of the first four terms is 20 and the second differences are equal 1.1 Find a formula for the nth term Tn​

your answer is a

step-by-step explanation:

plzplzplzplzplz mark brainliest i need it.

step-by-step explanation:

the options are kind of confusing. i can tell you what i see going on here when i look at the graph.

the class and exam medians are closely related, and it looks like the low outlier on the exam did pull the median lower. [tex][/tex]

50*10 is greater

step-by-step explanation:

if you add the zero from 10 to 50, it will give you a bigger number.

the answer will be