The inequality |t-57|< 7 describes the range of monthly average temperature, t, in degrees fahrenheit, for san francisco, california. solve the inequality and interperet the solution

Solution is:   and it means, the minimum temperature is 50° Fahrenheit and the maximum temperature is 64° Fahrenheit.

Explanation

Given inequality is:  

As this is absolute inequality, so we will get two different inequalities-- one for positive and another for negative. So.....

and

So, the final combined solution will be:  

It means that the minimum temperature for San Francisco, California is 50° Fahrenheit and the maximum temperature is 64° Fahrenheit.

what i would say the best answer is a. 40.5