A group of 5 students was asked, "How many hours did you watch television last week?" Here are their responses: 17, 8, 19, 9, 15 Find the mean of hours for these students.

Plzzz plzz maths ! quadratic sequences =an^2+bn 1) 1,6,15,28,45 2)5,18,39,68,105 3) 1,8,21,40,65 4) 7,24,51,88,135 5) -1,2,9,20,35

Lance lived in portugal and brazil for a total of 14 months to learn portuguese. he learned an average of 130 new words per month when he lived in portugal, and an average of 150 new words per month when he lived in brazil. in total he learned 1920 new words. write a system of equations to represent the situation. use x to represent portugal, and y to represent brazil

Rewrite the following quadratic functions in intercept or factored form. show your work. f(x) = 3x^2 - 12