*WILL GIVE BRAINLIEST* What is surface area?

Question 5 options:

A: The sum of all the areas of all the faces of a 3D object (think: wrapping paper)
B: The measure of space inside a 2D object
C: The measure of space inside a 3D object
D: The measure around a 2D shape (Think: a fence)

Suppose that the price p (in dollars) and the weekly sales x (in thousands of units) of a certain commodity satisfy the demand equation 4p cubedplusx squaredequals38 comma 400. determine the rate at which sales are changing at a time when xequals80, pequals20, and the price is falling at the rate of $.20 per week.

One line passes through (-7,-4) and (5,4) . another line passes through the point (-4,6) and (6,-9)

When you have 25 numbers, and jake picks 3 random numbers and puts them back, what is the chance bob has of picking those 3 numbers when he picks 6 random numbers (without putting them back)? explain.