What is the equation of a line that's perpendicular to y = x + 3/4x+3 and passes
through the point (3,-5)?

We just started the introduction into circles and i have no idea how to do this.

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?

Need showing work for this problem 56.25 ×25.80