Alana makes and sells homemade bracelets. she made a profit of $65 last week. this week, she donated some of the bracelets to charity. her profit at the end of this week can be represented by -$25. write a subtraction expression and an addition expression to represent alana's total profit for the two weeks combined.

11.64 years

Step-by-step explanation:

A = P(1+r/n)^nt

r = interest rate in decimals

t = time in years

n = number of times compounded per year

A = future amount

P = initial amount

We are given that our money will triple so we can let A = 3x if we let P = x

r = 0.1

n = 1

then we can write

3x = x(1+(0.1/1))^1t

3x = x (1.1)^t

3 = 1.1^t (divide both sides by x)

take log of each side

log 3 = log 1.1^t

log 3 = t*log(1.1)

t = log 3 / log(1.1)

t = 11.64 years