PLEASE HELP IM GONNA FAIL

7(x - 2) = 3(x + 4) solve the following equation. then enter your answer in the space provided using mixed number format.

Solve each quadratic equation by factoring and using the zero product property. n^2 - 49 = 0

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?