The audio-visual technician for a hotel ordered 4 boxes of microphone cords. there are 12 cords in each box. if there are now a total of 108 cords at the hotel, how many boxes of cords were there before the order?

 5 boxes.

Step-by-step explanation:

Given : The audio-visual technician for a hotel ordered 4 boxes of microphone cords.

There are 12 cords in each box.

Then, the number of cords in 4 boxes will be

If there are now a total of 108 cords at the hotel,  then the number of corfds were before the order : 108-48=60

Then, the number of boxes were in hotel before the order :-

Hence, there were 5 boxes of cords in the hotel before the order.

f(x) = - 2/3x + 5; f(5/2)

substitute 5/2 in for x:

f(5/2) = -2/3(5/2) + 5

simplify the right side:

f(5/2) = -5/3 + 5

f(5/2) = 10/3

answer:

f(5/2) = 10/3

i hope this you!