How many words did she type in 1 min

Witch represents the inverse of the function f(x)=1/4x-12

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?

The value of the expression 16-^3/4 8 1/8 -6 6 1/40 1/64