Dimensions are 10 9/12ft and 8 1/2 ft

Given the two similar triangles, how do i find the missing length? if a=4, b=5, and b'=7.5 find a'

18 16 11 45 33 11 33 14 18 11 what is the mode for this data set

Taber invested money in an account where interest is compounded every year.he made no withdrawals or deposits. the function a(t)=525(1+0.05)^t represent the amount of money in the account after t years. how much money did taber origanally invested?