The amount of money in an account may increase due to rising stock prices and decrease due to falling stock prices. maggie is studying the change in the amount of money in two accounts, a and b, over time.

the amount f(x), in dollars, in account a after x years is represented by the function below:

f(x) = 9,628(0.92)x

part a: is the amount of money in account a increasing or decreasing and by what percentage per year? justify your answer. (5 points)

part b: the table below shows the amount g(r), in dollars, of money in account b after r years.

r (number of years) 1 2 3 4
g(r) (amount in dollars) 8,972 8,074.80 7,267.32 6,540.59

which account recorded a greater percentage change in amount of money over the previous year? justify your answer. (5 points)

he used the algebra tiles correctly.

step-by-step explanation:

given : 3x(2x-1)

solution :

since he used algebra tiles .

armando's solution is the same in the solution shown in figure

as he distributed 2x into x and x and wrote them vertically

and also write   -1 vertically

and 3x into x and x and x and wrote it horizontally

performing the multiplication in the algebra tiles we get

and solving the given expression :

3x(2x-1)

since solving the expression using tiles   and solving the expression algebraically we get the same answer

thus   we can choose the first statement as the answer to this problem which is "he used the algebra tiles correctly".

step-by-step explanation:

x^2 -12x + 36 + y^2 = 36

x^2 + y^2 = 12x

r^2 = 12rcos(theta)

r = 12 cos(theta)

answer: 177/8

step-by-step explanation: