It's the bottom one. 20 dollars has to be less than or equal to the amount. you cannot spend more than $20
H = 6 in
V=bh
H=v/b
H=36/6
H=6
True.
two angles would be complementary if the sum of their angle measures is 90 degrees.
60 degrees and 30 degrees make a complementary angle while 90 and 90 degrees make a supplementary angle.