The graph looks like this, on the enclosed pic: One feature is that it's periodic and torn (has cut-off points), meaning the domain is the same as in case of tan(x): x€R and x =/= π/2+πn. The range equals the range of arcsin(x): -π/2<=y<=π/2 OR y€[-π/2;π/2] Hope could understand and if it helped! :)
90 grams are equivalent to 0.09 kilograms and 55 grams are equivalent to 0.055. So 0.09 + 0.055 = 0.145. 0.145 * 12 = 1.74 So 1.74 kilograms of sugar is needed to make 12 crisps.
