How many pounds of 65cent coffee must be mixed with 10 pounds of 90cent coffee to make a mixture worth 70 cents per pound? A
1 answer:
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Answer:
7(x)=5x+7
to find the x / zero intercept, plug in f (x) = 0
0=5x+7
move the left side and change the sign
-5x7
divide both of the equation by -5
x=
same steps for g(x)=-2x-4
x=-2