Simplify
6y(2x +9) – 3(x — 4xy)

3 • (8yx + 18y - x)

Step-by-step-explain : STEP

1

:

STEP

2

:

Pulling out like terms

2.1 Pull out like factors :

x - 4yx = -x • (4y - 1)

Equation at the end of step

2

:

(6y • (2x + 9)) - -3x • (4y - 1)

STEP

3

:

Equation at the end of step 3

6y • (2x + 9) - -3x • (4y - 1)

STEP

4

:

STEP

5

:

Pulling out like terms

5.1 Pull out like factors :

24yx + 54y - 3x = 3 • (8yx + 18y - x)

Final result :

3 • (8yx + 18y - x)

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.