Tracy bought 3 tickets for a day tour trip to a city. the price of each ticket was the same. after she bought the tickets, her account balance showed a change of −$95.31. what would have been the change to tracy's account balance had she only bought 1 ticket for the day tour trip?
−$31.70
$31.70
−$31.77
$31.77 (20 points)

the answer is 200

step-by-step explanation:

the way the question is worded, it seems to imply the $264 interest is simple interest, not compound interest.

the simple interest for 2 years is $264; the simple interest for 1 year is $132.

$132 interest on a $600 investment means an interest rate of (132/600)*100 = 22%.

the value of $200 at 22% interest compounded annually for three years is

200%281.22%29%5e3

the amount of interest is that value, minus the original $200.

details

step-by-step explanation:

$9.89

step-by-step explanation:

9.90 = p x .06 x .25 (3/12 changed to a decimal)

9.90 = p x 0.015

9.90 - 0.015 = p

9.89 = p