For four Fridays in January, Laurel earned $20.50, $30.75, $28.00, and $25.25 from babysitting. In February, she earned $12 more for babysitting four Fridays than she did in January.

What is the increase in the mean for February compared to January?

Round the answer to the nearest penny.

Enter your answer in the box.

The daily number of miles driven by a person to and from work during the week are 0, 30, 32, 37, 31, 38, 39, and 0.

Which statement is true?

Both the mean and mode are appropriate measures of center.

The median is the only appropriate measure of center.

Both the mean and median are appropriate measures of center.

Both the median and mode are appropriate measures of center.

The members of a bowling team score from 159 to 221. Their average score is 172. A new member with an outlyng score of 279 joins the team.

Which statement describes how the new member's score will affect center and spread of the bowling team?

The new member's score will decrease the center but increase the spread of the bowling team.

The new member's score will increase the center but decrease the spread of the bowling team.

The new member's score will decrease the center and spread of the bowling team.

The new member's score will increase the center and spread of the bowling team.