If g(x) = k times f(x), what is the value of k

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

Miss henderson wants to build a fence around a rectangular garden in her backyard in the scale drawing the perimeter of the garden is 14 in of the actual length of a b is 20 ft how many feet of fencing what you need

Which property was used to simplify the expression? 3c+9 +4c=3c+4c+9