I hope you know what '!' means
2!=2
3!=6
4!=24
basicalkly times every natural number including and before that number
nCr=

so

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Answer:18
Step-by-step explanation:
just multiply 8 until you make it to 200 or the closest around 200
8 x 25 = 200
To solve a Linear equation we need to find the slope:
-4-1 / -2-8 =1/2
now that we have the slope we can find our x and y
y-1=1/2(x-8)
y=x/2-3