It Will Be option A ok 2r -6'²
X² - 36 = x² - 6² = (x-6)(x+6)
Answer: 10.1246 years (approx)
Step-by-step explanation:
Here, She invests in a CD with an annual interest rate of 6.90% compounded quarterly.
Let the initial amount or principal = P
And, Let after t years it is doubled.
Therefore, 
⇒ 
⇒
( By taking log both sides)
⇒
⇒t= log 2/log 1.07080599536= 10.1245504311≈10.1246 years
Odds: yes/no
Prob: yes/total
Odds: 1/4 means there is 1 chance they get to go and 4 chances they don't get to go. This means there are a total of 5 students.
Prob: 1/5 = 0.2