The metal in a penny is worth about 0.505 cent how many cents is this written as a fraction

Use composition to determine if (x) or h(x) is the inverse of f(x) for the limited domain x2-1.

Anyone? 15m is what percent of 60m; 3m; 30m; 1.5 km?

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}.