In a survey 27% of the people chose salads over meat dish and in all 81 people chose salads. how many people were in the survey

Which expression is equivalent to? assume x > 0 and y > 0.

An object is translated by (x + 4, y - 2). if one point in the image has the coordinates (5, -3), what would be the coordinates of its pre-image? (9, -5) (1, -5) (9, -1) (1, -1)

Given the expression (7 ? 4i) ? (2 + 6i), perform the indicated operation and write the answer in the form a + bi.