At the flea market john found 2 buckets of legos with each bucket containing 2,988 lego pieces into 9 piles, how many pieces should he put into each pile ?

Does anyone know how to solve and graph this: 4 + | a + 2 | < 7the only part i don't get is the "4 +"

Write the equation in logarithmic form m^x=n

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?