А) A (20;0), В (80;0), С (150;0), D (230;0)
б) А (40;0), В (160;0), С (300;0), D (460;0)
3/5 потратил, осталось 2/5=90руб
x=90/(2/5)=90*5/2=225руб
Lim(x→5) [(x-5)(3x-2)]/[(x-5)(3x-1)] = lim(x→5) (3x-2)/(3x-1) = 13/14
lim(x→5) (5-x)(3+√(2x-1))/(3-√)(3+√) =lim (5-x)(3+√)/(10-2x) =
= lim (x→5) (3+√(2x-1))/2 = (3+3)/2 = 3
3) lim{z→√3} (√(1+z²) -1)/3z² = (√4 -1)/9 = 1/9
4) lim{x→∞)
=2025×57+53×42=115425+2226=117651