Luis is skiing on a circular ski trail that has a radius of 0.7 km. Luis starts at the 3-o'clock position and travels 2.55 km in the counter-clockwise direction. How many radians does Luis sweep out?

here is your mark brainliest

hello from mrbilldoesmath!

answer:

25x^2 + 90x + 84

discussion:

mn(x) = m(n(x)) = m( 5x + 9) =

(5x + 9)^2 + 3 =>

25x^2 + 90x + 9^2 + 3 =

25x^2 + 90x + 84                 (as 9^2 = 9*9 = 81)

which is the second choice

regards,  

mrb

p.s.   i'll be on vacation from friday, dec 22 to jan 2, 2019. have a great new year!

47 - 90 = 43

43 - 180 = x

x = 137