Mark is in training for a bicycle race. he needs to ride 50 kilometers a week as part of his training. he rode 18.23 kilometers on monday and 13.94 kilometers on wednesday. how much more does mark need to ride to complete his training for the week?

Graph the system: f(x)= 3/x-2; f(x)= 1/2x + 2

Describe how you can act financially responsible.

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?