Amy works as a tutor for $8 an hour and as a waitress for $7 an hour. This month, she worked a combined total of 96 hours at her two jobs. Lett be the number of hours Amy worked as a tutor this month. Write an expression for the combined total dollar amount she earned this month.
total earned (in dollars) =

The price of a visit to the dentist is calculated according to the formula 50+100n50+100n where nn is the number of cavities the dentist finds. on your last visit to the dentist, 22 cavities were found. what was the cost of your visit?

1. why is a frequency distribution useful? it allows researchers to see the "shape" of the data. it tells researchers how often the mean occurs in a set of data. it can visually identify the mean. it ignores outliers. 2. the is defined by its mean and standard deviation alone. normal distribution frequency distribution median distribution marginal distribution 3. approximately % of the data in a given sample falls within three standard deviations of the mean if it is normally distributed. 95 68 34 99 4. a data set is said to be if the mean of the data is greater than the median of the data. normally distributed frequency distributed right-skewed left-skewed

How much is $1200 worth at the end of1 year,if the interest rate is 5.5% is compounded quarterly.