Karl is offered a simple interest rate of 5% at a local bank. He deposited $900. Which statement is true?

Karl will earn $270 as an interest after 4 years.

Karl will earn $120 as an interest after 3 years.

Karl will earn $14 as an interest after 1 year.

Karl will earn $90 as an interest after 2 years.

It may be helpful to organize the information by listing all four variables and filling in ... Find the simple interest earned after 3 years on $500 at an interest rate of 6%. ... Find the simple interest earned after 4 years on $800 at an interest rate of 5%. ... We will use the simple interest formula to find the principal.

Step-by-step explanation:

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answer:   x (x+6)^2, choice b

discussion:

factor x out of the equation:

x^3 + 12x^2 + 36x = x (x^2 + 12x + 36).

note that 6+6 = 12 and 6*6 = 36 so the above factors into:

x (x+6)^2

which is choice b

you,

mrb