Louise sold 266 soft pretzels . if she sold them in groups of 19 soft pretzels, how many groups did she sell

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?

If f(x) = 3x2 - 2x+4 and g(x) = 5x + 6x - 8, find (f-g)(x).

Sam is picking fruit from a basket that contains many different kinds of fruit. which set of events is independent?