Greta starts using a new baking technique and she can now do twice as much of everything—in a single day Greta can now make 10 cakes or 8 pies, rather than the 5 cakes and 4 pies she could previously bake. We now know that Greta's production possibility frontier: a. has shifted right, but her opportunity costs of making pies are unchanged.
b. has shifted right, but her opportunity costs of making pies have decreased.
c. has not changed, but her opportunity costs of making pies have increased.
d. has not changed, but her opportunity costs of making pies have decreased.

a. has shifted right, but her opportunity costs of making pies are unchanged.

Explanation:

As we know that Greta curve should be shifted to righward as she can generated more and more units for both the goods so here the c and d option would be remooved. The option A and optoin B are considering the opportunity cost so here we can see that

10 ÷8 = 5 ÷ 4

5 ÷ 4 = 5 ÷ 4

As it can been seen that the opportunity cost remains the same

Therefore the option A is selected

in 2001, dell computer became the world’s largest personal computer vendor, continuing to

gain market share and post profits in an industry struggling with slumping sales and billions of

dollars in losses. dell sells 90% of its pcs directly to the final customer, largely bypassing the

reseller channel that accounts for most of the world’s pc sales. this direct customer relationship

is the key to dell’s business model, and provides distinct advantages over the indirect sales

model. dell’s direct relationship with the customer allows it to tailor its offerings to customer

needs, offer add-on products and services, and use the internet to offer a variety of customer

services. in addition, dell’s pcs are built to customers’ specifications upon receipt of an order,

giving dell additional advantages over indirect pc vendors who must try to forecast demand and

ship products based on those forecasts. dell’s direct sales and build-to-order model has achieved

superior performance in the pc industry in terms of inventory turnover, reduced overhead, cash

conversion, and return on investment (kraemer, et al., 2000).

explanation:

750 h and costs $0.60 per bulb.