PLEASE HELP I DON'T GET IT, MATH

If 25% of y is 30, what is 60% of y?

Determine which postulate or theorem can be used to prove that lmn =nmo

Determine the domain and range of the given function. the domain is all real numbers all real numbers greater than or equal to –2{x: x = –2, –1, 0, 1, 2}{y: y = –2, –1, 0, 1, 2}. the range is all real numbers all real numbers greater than or equal to –2{x: x = –2, –1, 0, 1, 2}{y: y = –2, –1, 0, 1, 2}.