Acomputer printer can print a 640-word document in 30 seconds. at this rate, how many seconds are required to print a document that contains 855 words?

Can somebody me out with this question

The scatter plot graph shows the average annual income for a certain profession based on the number of years of experience which of the following is most likely to be the equation of the trend line for this set of data? a. i=5350e +37100 b. i=5350e-37100 c. i=5350e d. e=5350e+37100

65% of students in your school participate in at least one after school activity. if there are 980 students in you school, how many do not participate in an after school activity?