Pleaseee help with this iready Urgentt

If f(x)=2x^6+x^2+2 then what is the remainder when f(x)is divided by x+2

The verbal translation for the difference of m and 7 increased by 15

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?