HELP PLEASE <3
2.3.4 Journal: Two-Variable Systems: Elimination
I need 4 -7

Apackage of bacon holds 15 strips of bacon. the pancake house uses 17 packages of bacon in the morning and 21 packages in the afternoon. how many more strips were used in the afternoon than the morning?

Solve 3x-18=2y and 5x-6y=6 by elimination show work

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