A researcher wishes to estimate the percentage of adults who support abolishing the penny, What size sample should be obtained if he wishes the estimate to be within 4 percentage points with 99% confidence it

(a) he uses a previous estimate of 36%?

(b) he does not use any prior estimates?

The chart below shows the distribution of weeds in yard

Place the following steps in order to complete the square and solve the quadratic equation,

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?