Where do they intersect on a graph f(x)=4x-3 and f(x)=9x-13

You are on a cycling trip around europe with friends. you check the weather forecast for the first week. these are the temperatures for the week. sun mon tues wed thurs fri sat 16°c 20°c 24°c 28°c 28°c 23°c 15°c what is the mean temperature forecast for the week?

It says factor each expression completely 8y+48

What is the solution to this system of equations? y= 2x - 3.5 x - 2y = -14