A. because he had ridden less than 140 so 5s >140
The whole school would have 170 students that have a dog
Ax + By = C
3x + 2y = 12
A=3, B = 2 and C = 12
Put T in the interior of <OPQ. P is the vertex of the angle. Join PT
A(w) = 50w-w^2
rewrite it as y = -w^2 +50w
using quadratic formula y = ax^2 +bx +c
a would equal -1, b = 50 and c = 0
find the axis of symmetry using x = -b/2(a)
so x = -50 / 2(-1) = -50/-2 = 25
so the width = 25 m
the greatest area is a square, so area = 25^2 = 625 square meters
