A company hired a printer to produce a total of x + 1 envelopes. The job consisted of two types of envelopes, 4¢ envelopes and 5¢ envelopes. If the company requested 3 more 4¢ envelopes than 5¢ envelopes, which of the following expressions denotes the cost, in cents, of the total x + 1 envelopes ? Choose the correct choice.
A) 3x+32 B) 5x-1 C) (7x+15)/2 D) (9x-4)/2 E) 6x+2
We can take   X+1 = 9   X= 8   So 4c envelopes will be 6   and 5c envelopes will be 3   So total cost will be 39   Then that is our target   Plug x =8 in answer choices   Only 5x-1 works   Correct Answer : 5x-1
<result>B</result>
A company hired a printer to produce a total of x + 1 envelopes. The job consisted of two types of envelopes, 4¢ envelopes and 5¢ envelopes. If the company requested 3 more 4¢ envelopes than 5¢ envelopes, which of the following expressions denotes the cost, in cents, of the total x + 1 envelopes ?