x = A sin â¡ ( Ï [ t â K ] ) + b , {\displaystyle x=A\sin(\omega [t-K])+b\ ,}. 1  A is the amplitude (or peak amplitude), 2  x is the oscillating variable, 3  Ï is angular frequency, 4  t is time, 5  K and b are arbitrary constants representing time and displacement offsets respectively.
Modeling agency. A modeling agency is a company that represents fashion models, to work for the fashion industry. These agencies earn their income via commission, usually from the deal they make with the model and or the head agency. The top agencies work with big-budget advertising agencies and fashion designers.
Temp agencies are a lucrative and growing business. According to Employment Spot, the temporary work industry is worth at least $43 billion. These agencies make their money by charging their clients for furnishing qualified employees for a limited period of time. In some cases, temp agencies may earn a commission if the employee and employer want to make their relationship full-time.