3. durable goods, nondurable goods, and services
economists look at any situation in terms of its component parts: the people making decisions, the environment in which they're making those decisions, and the goods or services being exchanged. for example, think about a wedding celebration. which of the following wedding-related items are nondurable goods? check all that apply.
a. a wedding ring
b. an engagement ring
c. the food at the reception
d. flowers for a wedding reception

The  knowledge gap  as been recast more recently as a “digital divide”  gap. with the internet and social media many things can be done faster and better. so much faster and better that those that do not have access to them are literally left out of the game. 

You need to figure out at which x-value does the graph has a tangent line slope of -1.remember, the derivative is the slope of the tangent line. so find the derivative function and set it to equal -1 to find the x-value that will have a tangent line slope of 0.differentiate with the chain rule.    set the derivative to equal -1 and solve for x.      take log base 10 of both sides. also recall that  .    so the x-coord of the point of tangency is .the y-coordinate of this point of tangency can be calculated using the original function:     using point-slope form, the equation of the tangent line is      the x-intercept of this tangent line is when the graph is at y=0.    this rounds off to  .choice c.