Question

The function c = 2.50(n – 2) + 4.50 represents the cost c in dollars of printing n invitations. Which of the following is not true?



A/Each invitation costs $4.50 to print.


B/The cost depends on the number of invitations printed.


C/For each additional invitation, it costs an extra $2.50 to print.


D/One cannot print just one invitation.

Answer 1

Rewriting the function
$c = 2.50(n-2)+4.50$ 

The variable 'n' is the number of invitation ordered and $2.50 is the price for one invitation.
If we want to print 2 invitation, the expression 'n-2' becomes '2-2=0' which means the company will make 2.50(0) + 4.50 = 0 + 4.50 = $4.50 income (which is the fixed price)

To make profit, the company must receive order more than 2 invitation

Answer: D