Refer to Figure 2-10. It is possible for this economy to produce 45 doghouses and 30 dishwashers.

Without seeing Figure 2-10, it's impossible to determine the specific production capabilities it illustrates. However, the question seems to imply a scenario in a typical production possibility frontier (PPF), where combinations of two goods that an economy can produce are shown. If the statement claims a combination is possible and it's being questioned, it likely suggests that this combination is outside the economy's production possibility frontier, meaning the economy does not have the resources to produce 45 doghouses and 30 dishwashers at the same time.