Initial number of Bacteria = Ao = 100
Number of Bacteria which make the person ill = A = 45,000,000
Growth rate = r = 150% = 1.50
The equation model for this situation is:

Using the values in above equation, we can write:
This means, the person will fall sick after about 14 hours.
Total sets of 4-digits = 6
Total 4-digit numbers formed by one set of number = 4
So, total numbers that can be formed = 6 × 4 = 24
You would select the points with the x-values -3 and 2 and use the slope formula:
(-3, -36) and (2,4)

← slope formula
x1 = -3 y1 = -36 and x2 = 2 y2 = 4
-5^7/-5^2=5^7/5^2= 5^(7-2)=5^5 this is the answer