Please help I’ll mark as brainliest!

If angle 2=3x +1 and angle 3=2x +4what is angle 2

You are standing next to a really big circular lake. you want to measure the diameter of the lake, but you don't want to have to swim across with a measuring tape! you decide to walk around the perimeter of the lake and measure its circumference, and find that it's 400\pi\text{ m}400? m. what is the diameter dd of the lake?

What is the slope of the line that passes through the points (–9, 2) and (0, 4)? the slope of the line is