Anne opened a savings account and deposited $10. If the balance in her account doubles each month, what is the account balance after 4 months/

$160

Step-by-step explanation:

You can set up an equation that will work for any time period, but since it is only 4 months we can do this simply too:

10 x 2 = 20

20 x 2 = 40

40  x 2 = 80

80 x 2 = 160

$160

$160

Step-by-step explanation:

Anne opened a savings account and put in $10.00.

Double = 2 times the amount.

Since the balance doubles each month:

1 month: $20.00 (10 x 2)

2 month: $40.00 (20 x 2)

3 month: $80.00 (40 x 2)

4 month: $160.00 (80 x 2)

(0,-3) see attached graph

step-by-step explanation:

a. to solve the system, graph the two equations.

x = y+3 becomes y=x-3 has m=1/1 and b=-3. start at (0,-3) on the y-axis and plot a point. then move up 1 unit and 1 unit to the right. plot a point and connect.

y=-4x+3 has m =-4/1 and b=-3. start at (0,-3) on the y-axis and plot a point. then move down four units and to the right 1 unit. plot a point and connect.

the solution is the point (x,y) where the two lines intersect. by the graph below it is (0,-3).

b. to solve by substitution, substitute y = -4x-3 into x= y+3

x= (-4x-3) +3

x=-4x

5x=0

x=0

now substitute x = 0 back in to find y.

y= -4(0)-3

y=0-3

y=-3

solution is (0,-3)

c. use elimination by adding the equations together.

x-y=3

4x+y=-3

5x=0

x=0

then substitute into one equation to find y.

y=-4(0)-3

y=-3

you probably already have the answer but anyways it's b. 15.0

step-by-step explanation: