Factorise
7lm - 21lmn​

The magnitude, m, of an earthquake is defined to be m=log l/s, where i is the intensity of the earthquake (measured by the amplitude of the seismograph wave) and s is the intensity of a “standard” earthquake, which is barely detectable. what is the magnitude of an earthquake that is 1,000 times more intense than a standard earthquake? use a calculator. round your answer to the nearest tenth.

Graph the linear function using the slooe and y intercept

True or false: the graph of y=f(bx) is a horizontal compression of the graph y=f(x) if b< 1