Connie deposits $30 into an account. The value of the account, in dollars, can be modeled as V(t) = 30 (1.05)^t , where t is the time, in years, since opening the account. To the nearest cent, What is the average rate of change in the value of the account for the first 3 years?

A. $0.63/year
B. $1.58/year
C. $3.15/year
D. $4.73/year

The standard deviation for a set of data is 5.5. the mean is 265. what is the margin of error?

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?

Afamily has five members. a mom, a dad, two sisters, & a brother. the family lines up single file. what is the probabillity that the mom is at the front of the line