How can you add the fractions 3/10 and 2/5? explain

Ill mark the brainliest if you me with the these three questions 7,8,9

Okay so i didn't get this problem petro bought 8 tickets to a basketball game he paid a total of $200 write an equation to determine whether each ticket cost $26 or $28 so i didn't get this question so yeahyou have a good day.

Asequence is defined recursively using the formula f(n + 1) =f(n) - 5. which sequence could be