figure B is a scale image of figure A as shown. enter the scale factor applied to figure A to produce Figure B

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?

Jimmy can run 3.5 miles in 20 minutes. how far can ne run in one hour and ten minutes?

Which expression is the factorization of x^2+10+21