If it's right I'll mark brainliest solve.
b=3/4a
a+b=21

box one, two, three, or four

a=20
b=15

a=12
b=9

a=37 1/4
b= -16 1/4

a=20
b=11.
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answer: its c because when it has a magnet next to it it will move away from the mixture. hope this

step-by-step explanation:

y = 3x+4

step-by-step explanation:

to find the slope

slope = (y2-y1)/ (x2-x1)

    = (-8-4)/ (-4-0)

    = -12/-4

  = 3

using the slope intercept form of a line

y= mx+b

we know the slope is 3

we know the y intercept is 4 ( the point where it crosses the y axis or x=0)

y = 3x+4

idk what the heck he answer is, i’m just putting this here so i finish my account