Answer:
The correct answer is B). $1.25
Step-by-step explanation:
The function is given to be :
y = 1.25x + 5
where y represents the cost of a foot of cable and x represents the number of feet
Here , 5 represents the initial cost of the cable
And 1.25 represents the cost of the cable which increases for every foot
Thus, The amount of cost of cable which increases for every foot = $1.25
Therefore, The correct answer is B). $1.25
