Ajob market expert said, “if this trend continues, we will see further increase in employees.” which of the following graphs could represent the expert’s statement?

Express the following as a function of a single angle. cos(60) cos(-20) - sin(60) sin(-20)

Is this a polynomial function? i need to know asap

Aculture started with 4,000 bacteria. after 5 hours, it grew to 5,200 bacteria. predict how many bacteria will be present after 19 hours. round your answer to the nearest whole number.