Express V in terms of T

You paid 28.00 for 8 gallons of gasoline. how much would you pay for 15 gallons of gasoline?

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

Val and tony get paid per project. val is paid a project fee of $44 plus $12 per hour. tony is paid a project fee of $35 plus $15 per hour. write an expression to represent how much a company will pay to hire both to work the same number of hours on a project.