Tamara is 7 years older than her sister. The sum of their age is 27.
What is Tamara's age ?

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

What is the measure of ac? 5 units 13 units 26 units 39 units 3x- 2b 6x + 9

Sarah took the advertising department from her company on a round trip to meet with a potential client. including sarah a total of 11 people took the trip. she was able to purchase coach tickets for $280 and first class tickets for $1280. she used her total budget for airfare for the trip, which was $6080. how many first class tickets did she buy? how many coach tickets did she buy?