Pls add working out if possible.

And employee salary increased by $4500 which represents a 15% raise what is the rate of the increase

Twenty-five percent of the customers entering a grocery store between 5 p. m. and 7 p. m. use an express checkout. consider five randomly selected customers, and let x denote the number among the five who use the express checkout.

How can the correlation in the scatter plot graph below best be described? positive correlation negative correlation both positive and negative no correlation