Emma researched mutual funds and found one that earned 9% interest. she put all of her money, $4000, in the account and plans to leave it there until she graduates college in 7 years.
a) how much money will she have after college graduation?
b) how much did emma's account earn?

Two fire-lookout stations are 190 miles apart, with station a directly south of station b. both stations spot a fire. the bearing of the fire from station a is upper n 55 degrees upper e and the bearing of the fire from station b is upper s 60 degrees e. how far, to the nearest tenth of a mile, is the fire from each lookout station?

Solve this system of equations. 12x − 18y = 27 4x − 6y = 10

The number if marbles of different colors stored in a hat is listed below: 4 red marbles 10 green marbles 7 blue marbles. without looking in the hat, dan takes out a marble at random. he replaces the marble and then takes out another marble from the hat. what is the probability that dan takes out a blue marble in both draws?