Which ordered pair represents the solution to: 2x + y = 14
15x - y = 28
OA (-6, -2)
OB. (14, -14)
lahi
C. (6,-2)
C
D. (6,2)
o
E.
(-14/3,14/3)

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?