Which of the following is the standard form of the equation 5x2 - 20x = 15? x2 - 4x = 3 x2 - 4x - 3 = 0 5x2 - 20x - 15 = 0

Option B, x² - 4x - 3 = 0

Step-by-step explanation:

The equation is 5x² - 20x = 15

The most simplified form of an equation is called the standard form of an equation.

So we have to simplify the given equation to convert it into standard from.

5x² - 20x = 15

5 (x² - 4x) = 15

x² - 4x = 3

x² - 4x - 3 = 0

Option B is the answer.

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.