Please help me understand

What is the correlation coefficient between the variables? round to three decimal places. enter your answer in the box

:24% of students in a class are girls. if there are less than 30 students in this class, how many students are there? how many girls are there?

Robin spent 25% more time on his research project than he had planned he’s been an extra h ours on the project which of the following expressions could represent the number of hours rob actually spent on the project