What is the solution set of 7x^2 + 3x = 0?
a. {0, 3/7}
b. {0, -3/7}
c. {0, -4/7}

step-by-step explanation:

a child is 12 years old, and his father is 32 years older. in how many years will the age of the father be 2 times the age of the child?

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this needs to be the answer format, or else your answer is incomplete.

if the number of years is x, then the equation is

in __ years