Please help me.

What is 26^3+75k/4-95.6^7*82 if k=25.6

Roger could feed 5 walruses with 4 kilograms of fish. how many walruses could he feed with 7.2 kilograms of fish?

If you prove that ∆wxz is congruent to ∆yzx, which general statement best describes what you have proved?

Prove that 16^4-2^13-4^5 is divisible by 11.