Answer:
Step-by-step explanation:
Let P be price after t year . From the formula of compounding
P = 9
Taking log to the base e on both sides
ln P = ln 9 + t ln 1.015
= (2.197 + .0149t )
P =
B
the answer is B
add 21 to both sides to get everything on one side
x^2 - 10x + 21 = 0
do factorization, guess and check
(x - 7) (x -3) = 0
x =7, and x =3
(2x+3) x (x-7)
