Gloria has a lunch account in the school cafeteria. The balance, f(x), in her account can be represented by the function f(x) = –1.50x + 40, where x is the number of meals purchased. Suppose –1.50 changed to –2.75. What does this mean in the context of the problem?

Changing –1.50 to –2.75 means her initial balance has decreased.
Changing –1.50 to –2.75 means her initial balance has increased.
Changing –1.50 to –2.75 means the price per meal has decreased.
Changing –1.50 to –2.75 means the price per meal has increased.

Question

Gloria has a lunch account in the school cafeteria. The balance, f(x), in her account can be represented by the function f(x) = –1.50x + 40, where x is the number of meals purchased. Suppose –1.50 changed to –2.75. What does this mean in the context of the problem?

 Changing –1.50 to –2.75 means her initial balance has decreased.
 Changing –1.50 to –2.75 means her initial balance has increased.
 Changing –1.50 to –2.75 means the price per meal has decreased.
 Changing –1.50 to –2.75 means the price per meal has increased.

misssunshinexxoxo · Answer

@KEYS

dan815 · Answer

f(x) = –1.50x + 40
x is the number of meals purchased

dan815 · Answer

when x=0 no meals are purchased so thats the initial balance he has which is 40

dan815 · Answer

by making it -2.75x, we are subtracting 2.75  for every meal

dan815 · Answer

Changing –1.50 to –2.75 means the price per meal has increased.

misssunshinexxoxo · Answer

ok thank you

dan815 · Answer

do u understand

misssunshinexxoxo · Answer

Absolutely yes; I originally thought t was C. Wording of question threw me off.

dan815 · Answer

okay great