Mr. porter sells 10 bottles of champagne per week at $50 per bottle. he can sell 11 bottles per week if he lowers the price to $45 per bottle. the quantity and the price effects on total revenue would be, respectively, an increase of and a decrease of

$45; $50

Explanation:

Given that,

Quantity sold (at price = $50 per bottle) = 10 bottles of champagne

Quantity sold (at price = $45 per bottle) = 11 bottles of champagne

Therefore,

Quantity effect (keeping the price unchanged):

= (11 - 10) × $45

= $45  

Price effect (keeping the quantity unchanged):

= ($45 - $50) × 10

= - $50

Hence, total revenue experiences an increase of $45 and a decrease of $50.

metallurgy is your answer

the "study of metals and the process of refining ("

note that it says metal. metallurgy has the word "metal" in it, and so is most likely your answer (and is your answer).

~

b is the correct answer