A supervisor took several minutes to count the number of items at the end of an assembly line. The table shows the number of items at the end of each minute. What is the rate of change of the number of items between minute 3 and minute 5? What does the rate of change mean in this situation

answer:   y=2x-3

step-by-step explanation:

step-by-step explanation:

the ratio of red paint to blue paint is always 9/7. that means that, whatever x's value, (4x+12)/(4x-4) has that same ratio. so, set up an equation and cross-multiply to solve for x:

9/7 = (4x+12)/(4x-4)

9(4x-4) = 7(4x+12)

36x - 36 = 28x + 84

8x - 36 = 84

8x = 120

x = 15