The radius of circle F is 19 cm what is the length of its diameter

Which of the binomials below is a factor of this exression? 16x^2+40xy+25y^2 a.4x-5y b. 2x-5y c.4x+5y d.2x+5y

Cody was 165cm tall on the first day of school this year, which was 10% taller than he was on the first day of school last year.

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