Two algebra questions!: (

1)given v = 2πr2h, solve for h

a)h = v/2r2

b)h = v2πr2

c)h = v - 2πr2

d)h = v/2πr

2)solve the equation for y: -8x + 4y = 20
a)y = 2x - 5

b)y = 2x + 5

c)y = 1/2x + 5

d)y = 1/2x + 20

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