The problem says:
Solve the equation, then choose the interval that contains the solution.
a. between 30 and 35
b. beween 60 and 65
c. between -105 and -110
d. between -10 and -15
Now, I work the problem out like they show in the example and I get 32, which is a, but the book says that it is b.
Im so confused, what am I doing wrong?