Set f(b) = b^2 - 75 = to 0 and solve for b:
b^2 = 75
b^2 = 25(3)
b = plus or minus sqrt(25[3]) = plus or minus sqrt(25)*sqrt(3) = plus or minus 5 sqrt(3).
Answer:
B
Step-by-step explanation:
The next 18 days because your trying to see how many days it is until he does BOTH
I think the answer is a I'm not sure