Coding and Decoding Questions

In a certain code, if LEMON is coded as PWOMA then SHIRT is coded as

If 1∆-5=5, 4∆7=-28 and -1∆-3=-3, then find the value of 8∆-8 =?

If 19 + 2 x 2 + 3 = 369 and 23 + 2 x 6 + 2 = 565, then 7 + 3 x 11 + 3 = ?

If BOULDER is coded as ZMSJBCP, then how will ELK be coded as?

In a certain code language, "WILDHORN" is written as "1133" and "RAPTURE" is written as "1089". How is "PORTLOUIS" written in that code language?

If REGAINS is coded as QDFZHMR, then how will PRY be coded as?

If ENTRY is coded as 98462 and STEADY is coded as 749312, then how is NEATNESS written in that code?

In a certain code language, “TRAP” is written as “53” and “MADE” is written as “21”. How is “LATE” written in that code language?