What is the volume of the prism ???

Umm.. just started this 2day and its not on my notes(p′︵‵。)

2x - 20 = 32 20 - 3x = 8 6x - 8 = 16 -13 - 3x = -10

Simplify 5 square root of 7 end root plus 12 square root of 6 end root minus 10 square root of 7 end root minus 5 square root of 6 . (1 point) 5 square root of 14 end root minus 7 square root of 12 5 square root of 7 end root minus 7 square root of 6 7 square root of 12 end root minus 5 square root of 14 7 square root of 6 end root minus 5 square root of 7