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Option A will be the correct answer
Answer:
(a) The price for a revenue of $18,750 is $239.2.
(b) They sold 710 colonial houses and 2130 ranch houses
Step-by-step explanation:
(a) If the weekly revenue is defined as

then the price must be calculated as:

The roots of this function are

The first root is negative, so it is not a real solution. So the second root is the answer.
The price for a revenue of $18,750 is $239.2.
(b) Last year they sold three times as many ranch models (Hr) as they did colonial models (Hc):

The total amount of houses sold (colonial + ranch) is 2840

Kelso / jones = 84.5/33.8 = 5/2 = 2 1/2
==> c