In ΔCDE, m∠C = 47° and m∠D = 34°. Which list has the sides of ΔCDE in order from shortest to longest?

In triangle △abc, ∠abc=90°, bh is an altitude. find the missing lengths. ah=4 and hc=1, find bh.

The graph shows the charges for a health club in a month. make a function table for the input-output values. writes an equation that can be used to find the total charge y for the number of x classes

Which one is the correct answer, and why?