Please help I will mark brainlist. Find the missing side x=

Give all possible names for the line shown. calculation tip: lines can be written with either point first.

Tom can paint the fence in 12 hours, but if he works together with a friend they can finish the job in 8 hours. how long would it take for his friend to paint this fence alone?

Write the equations in logarithmic form 9^4=6,561