Ms. Taube can write an online lesson in 4 hours. It takes Ms. Kass 6 hours to write the same length lesson. How long would it take if they worked together? A 3 hours B 5 hours C 2 hours and 4 minutes D 2 hours and 24 minute

Let f(x) = 3 − x . find the average rate of change of f(x) from x = a to x = a + h and simplify your answer so that no single factor of h is left in the denominator.

Factor the expression using gcf 9b+45

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?