Erika worked 14 hours last week and 20 hours this week. if she earns $9 per hour, how much did she earn during these two weeks?

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

Noel is hoping to make a profit (in $) on the school play and has determined the function describing the profit to be f(t) = 8t – 2654, where t is the number of tickets sold. what does the number 8 tell you?

Susie wants to take her friend out for lunch. she wants to spend $9.75 each person. how much will she spend in all.