How do you rewrite 9^-2 without an exponent

Really need on these. i have no idea what to do

Which function is odd check all that apply a. y=sin x b. y=csc x c. y=cot x d. y=sec x

Aresearch group wants to find the opinions’ of city residents on the construction of a new downtown parking garage. what is the population of the survey downtown shoppers downtown visitors downtown workers city residents