Please help me answer

What is the product of the radical expression. (7-2square root) (8+2 square root)

Quadrilateral ghjk has vertices g(2, 3), h(8, 2), j(6, 8), and k(3, 6). it is transformed according to the rule t(–4, –5). what are the coordinates of g”? (–7, 3) (–2, 2) (–1, –7) (2, –2)

: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?