Need with classifying shapes. simple high school geometry but i was absent the day we went over it.
p. s file with question is attached
p. p.s i just need question hw number 3 answered

Apublic library wants to place 4 magazines and 9 books on each display shelf. the expressions 4s +9s represents the total number of items that will be displayed on s shelves. simplify this expression

Under normal conditions, 1.5 feet of snow will melt into 2 inches of water. during a winter season high in the mountains, 301 feet of snow fell. how many inches of water will there be when the snow melts?

This question awards 100 ! i really don’t want to fail i will also mark you !