ok!
in this question we will solve like
as it says to be a member you need to pay $16 and after you are a member ....you just have to pay $3 for one visit!(good deal lol)
now....they are asking that for a member of the art museam...what will their 10 time visit to the museum cost.So in this we just have to multiply 10 by $3 and that gives us $30 and thats our answer!
if you have a doubt...feel free to ask!