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?

Answer 1

f(x) = –1.50x + 40

x is the number of meals purchased

if you switched -1.50 with -2.75, this means that each meal now costs $2.75 instead of $1.50