A) f(x) = 0 <=> x = -1 or x = 2 or x = 3;
b) x∈(-oo, -1) => f(x) < 0;
x∈(-1, 2) => f(x) > 0;
x∈(2, 3) => f(x) < 0;
x∈(3, +oo) => f(x) > 0;
2/3-5/6
2×2=4
3×2=6
4/6-5/6=-1/6
-1/6
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3/4
If you’re talking about 312 pounds then that’ll be 141.52082 kilograms
Y=2/5x+1 because it’s the same line
