3/2*4/5 is equal or greater or less than 4/5

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

Write an expression that represent sarah’s total pay last week. represent her hourly wage with w monday 5 tuesday 3 wednesday 0 noah hours wednesday 8 only with w wage did noah and sarah earn the same amount last week?

Sara made $253 for 11 hours of work. at the same rate how much would he make for 7 hours of work?