if the coordinates of a parallelogram are q(3, -2), r(7, -2), s(9,3), and t(5,3), the area of the parallelogram is:
a. 20 units²
b. 10 units²
c. 30 units²
d. 40 units²

[10 points, algebra 2-simplifying complex fractions]according to my answer key the restrictions are -1 and 4. but why not positive 1?

Standard deviation of 19,29,21,22,23

Determine the domain and range of the given function. the domain is all real numbers all real numbers greater than or equal to –2{x: x = –2, –1, 0, 1, 2}{y: y = –2, –1, 0, 1, 2}. the range is all real numbers all real numbers greater than or equal to –2{x: x = –2, –1, 0, 1, 2}{y: y = –2, –1, 0, 1, 2}.