Plz with algebra 1/3 (45- 18/7) put into simplest form

Plz me plz i need and plz delte this after answer

To determine the number of deer in a forest a forest ranger tags 280 and releases them back

Write an equation of the line that passes through the point (2, 3) and is perpendicular to the line x = -1. a) y = 1 b) y = 3 c) y = 0 eliminate d) y = -3