What is the solution to the system of equations?HELP DUE TODAYYY

Astore sells two types of radios. one type sells $87 and the other for $119. if 25 were sold and the sales were $2495, how many of the $87 radios were sold a) 5 b) 20 c) 15 d)10

Pat listed all the numbers that have 15 as a multiple write the numbers in pats list

Look at this pattern ; 1,4,9, number 10000 belongs in this pattern . what’s the place of this number?