I question I am stuck on. An explanation would be cool

Prove the divisibility of the following numbers: 25^9 + 5^7 is divisible by 30.also, read as (25 to the power of 9) + (5 to the power of 7) is divisible by 30. blank x 30what is the blank? ( it should be expressed in exponent form)

What’s 8y+48 and factor each expression completely

5x−4≥12 or 12x+5≤−4 can you with this problem