What is the value of the 6 in 4.768

What numbers are included in the set of integers? what numbers are not included?

When 142 is added to a number the result is 64 more times the number my options are 35 37 39 41

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)