Refer to Exhibit 4-8. If the wheat market is in competitive equilibrium the producers’ surplus will equal Group of answer choices

area 1 + 2 + 3
area 1 + 2 + 4
area 3 + 5
area 1 + 2 + 3 + 4 + 5
area 6

I’m stuck on this equation, anyone got the answer?

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?

Suppose you are choosing a 6-digit personal access code. this code is made up of 4 digits chosen from 1 to 9, followed by 2 letters chosen from a to z. any of these digits or letters can be repeated. find the total number of personal access codes that can be formed. 492,804 341,172 39,917,124 4,435,236