Fahrenheit 451 is set in an unspecified city at an unspecified time in the future after the year 1960. The novel is divided into three parts: "The Hearth and the Salamander", "The Sieve and the Sand", and "Burning Bright".
Well, since we know an antonym is the opposite, and patronize means to treat someone kindly, we can choose C. scornful. :)
Lets say the number = x
the equation is:
2/3 x - 6 = -10 (add 6 to each side)
2/3 x - 6 + 6 = -10 + 6
2/3 x = -4 (multiply each side by 2/3 's reciprocal or 3/2)

x =

x = -6
The number is -6