F(x)=3x+12 and g(x)=4x-8 find h(x)=f(x)+g

()1. how do you find range? 2.the following set of data is to be organized into a histogram. if there are to be five intervals on the graph, what should the length of each interval be? 30, 34, 23, 21, 27, 25, 29, 29, 25, 23, 32, 31

He that is measured at 220° is a reflex angle. the opposite angle is obtuse. find the measure of obtuse .

In trapezoid abcd, ac is a diagonal and ∠abc≅∠acd. find ac if the lengths of the bases bc and ad are 12m and 27m respectively.